Sunday, July 15, 2012

Great Wall of China

The Great Wall of China is a series of stone and earthen fortifications in China, built, rebuilt, and maintained between the 5th century BC and the 16th century to protect the northern borders of the Chinese Empire during the rule of successive dynasties.
The steps that form the Great Wall of China are very steep and tall in some areas. Tourists often become exhausted climbing the wall and walk no more than a kilometre or two (around a mile). In some areas the blocks were cemented with a mixture of glutinous rice and egg white. In the extreme western desert locations, where good materials are scarce, the wall was constructed from dirt rammed between rough wood tied together with woven mats.
The Wall is included in lists of the "Seven Medieval Wonders of the World" but was of course not one of the classical Seven Wonders of the World recognized by the ancient Greeks.It is the world's longest human made structure, stretching over approximately 6,400 km from Shanhaiguan in the east to Lop Nur in the west, along an arc that roughly delineates the southern edge of Inner Mongolia, but stretches to over 6,700 km in total. It is also the largest human made structure ever built in terms of surface area and mass.
Three sections are in Beijing municipality, which was renovated and which is regularly visited by modern tourists. One of the most striking sections of the Ming Great Wall is where it climbs extremely steep slopes. It runs 11 kilometres long, ranges from 5 to 8 meters in height, and 6 meters across the bottom, narrowing up to 5 meters across the top. Wangjinglou is one of Jinshanling's 67 watchtowers, 980 meters above sea level.
South East of Jinshanling, is the Mutianyu Great Wall which winds along lofty, cragged mountains from the southeast to the northwest for approximately 2.25 kilometers. It is connected with Juyongguan Pass to the west and Gubeikou to the east. Another notable section lies near the eastern extremity of the wall, where the first pass of the Great Wall was built on the Shanhaiguan, the first mountain the Great Wall climbs. Jia Shan is also here, as is the Jiumenkou, which is the only portion of the wall that was built as a bridge.

HISTORY

The construction of the Great Wall China began in the 7th century B.C., under the Dynasty Zhou. This wall was constructed along many hundreds of years. The first version of the wall was constructed to support invaders far from the villages that cultivate the land for the Chinese border. These walls were constructed in weak points in the natural landscape or where the threat was perceived like the major one.
Some of these walls eventually became of greater strategic importance when the localised defences were gradually joined to form the Great Wall of China. At those times that the Chinese territory expanded northward, earlier walls became secondary defences when a more northerly wall was built. The Great Wall of China was built by soldiers, civilians, farmers and prisoners, primarily during three dynasties: the Qin, the Han and the Ming, although the Sui Dynasty and the Ten Kingdoms period also played a part. The building styles of each dynasty added their own flavour and advanced the techniques learned from the previous.
Great Wall of China
The Great Wall of China
The first dynasty of China was the short lived Qin Dynasty. The first emperor, Qin ShiHuang, was a tyrannical emperor who unified China by force and set about constructing one Great Wall by joining. He even sent scholars to work on the Great Wall, anyone who was deemed unproductive. These workers faced arduous labor, and the constant danger of being attacked by bandits.
Most of early Great Wall was composed of weak stone, but when the natural stone in an area was not sufficient did that the engineers were turning to another method, there had to be used a rectangular frame that was filled with loose soil. This soil was trampled for several hours by a team of workers until this was solid. This process of landfill and to trample would be repeated again and again until the wall was reaching the wished height.
The second dynasty to add to the Great Wall was the Han Dynasty. The most notable contribution of the Han Dynasty is that they extended the Great Wall westwards through the Gobi Desert. Despite a lack of building materials, ingenious Chinese engineers found a solution. This method involved first laying down a layer of willow reeds, possibly woven. Then a layer of gravel and a little water was applied and trampled solid. After the trampling, a new layer of reeds and gravel was added. This process would be repeated until the desired height was reached. Amazingly, some portions of this Great Wall are still standing, partly due to the dry conditions of the Gobi.
The last dynasty to build a northern wall was the Ming Dynasty (1368-1644). This dynasty built the biggest, longest, strongest and most ornate Great Wall ever. These are the walls that we are familiar with today. Their methods of Great Wall building fused all that was learned by the two previous dynasties. First, a center of trampled earth was created. Then, around the firm center was applied a shell of stone and bricks. The bricks that were created by the Ming are so strong that they compare well with the ones we use today. The strong Ming wall was built across some of the most dangerous terrains in China, including steep mountains, sometimes on 75 degree inclines. It has been said that every foot of the construction of this Great Wall cost one human life.
The Ming Dynasty Great Wall starts on the eastern end at ShanHai Pass, near QinHuangDao, in Hebei Province, next to Bohai Sea. It once spanned 9 provinces and 100 counties, but the final 500 kilometers of the Great Wall to the west have all but turned to rubble. Along the Ming Great Wall of China there are many watchtowers, spaced from less than a kilometer to several kilometers or more apart. These were partly used to transmit military messages. Fire and smoke were the most efficient means for communication; fire was used at night and smoke during the day. Straw and dung was used for this. In 1468, a series of regulations set specific meanings to these signals: a single shot and a single fire or smoke signal implied about 100 enemies, two signals warned of 500, three warned of over a 1000 and so on. In this way, a message could be transmitted over more than 500 km of the Great Wall within a few hours.

Christ the Redeemer

The statue of Christ the Redeemer is located at the top of Corcovado Mountain. The entire monument of statue of Christ the Redeemer is 38m high with the statue accounting for 30m and overlooking the city of Rio de Janeiro is one of the tallest statues in the world; the span from finger tip to fingertip is 28m and there is a small chapel housed in the base.
The reason why it was built was to show that Christ loves all. In Portuguese, this iconic monument is known as Cristo Redentor. Christ the Redeemer was designed by a French sculptor by the name of Paul Landowski and a local engineer named Heitor da Silva Costa was chosen to supervise the entire construction. The statue was built not out of steel but from reinforced concrete as that was considered a more suitable material for the cross shaped statue. The external caps of the idol were constructed in soapstone due to the resistance of this material to the extreme time and also due to its malleability.
The statue of Christ the Redeemer can be accessed by the 2.4 meter Corcovado Railway that has the capacity to hold 360 passengers every hour. The trip by rail is approximately 20 minutes and leaves the base each half hour. From the road or the train terminal Christ the Redeemer statue is reached by 222 steps. For those not wishing to make the arduous trek up the mountain, reaching the statue is possible by escalators and elevators.
Christ the Redeemer is one of the tourist attractions that every year attracts to more and more visitors. The best time to visit the Christ the Redeemer statue is late afternoon or evening when you can enjoy the splendour of the setting sun while taking in one of the most important landmarks in the world.

HISTORY

The history brings over of the construction of Christ's Redeemer statue begins in the century XVI, when the Portuguese gave the name of “Corcovado Mountain”, to one of its more impressive mountains an allusive name to its form hump.
In 1924, Don Pedro personally drove to the first official expedition to the Corcovado Mountain, this expedition end with the opening of an accessible raise to the above mentioned mountain. Then in 1859 the father Vincentian Pedro Maria Boss came to Rio de Janeiro and was struck by the mysterious beauty of the Corcovado Mountain and suggested the construction of a religious monument in honour of Princess Isabel, who in 1921 gave way for the idea of a great statue of Christ.
Christ Redeemer Statue
Christ the Redeemer
From 1859 to 1921, Don Pedro gave his consent for the building of the Corcovado Railroad line between Cosme Velho and Paineiras. After a hard competition, the project by the engineer Heitor da Silva Costa is chosen and in September, a national fundraising campaign for the works is organized.
Finally, in 1927, the construction of the statue begins after models of diverse sizes had been constructed. All calculations were done by Coast Hisses, helped by Pedro Viana and Heitor Levy, which during the years of construction, resided in a shed of wood at the foot of the monument.
All the necessary work material and workers who participated in the construction of the Christ statue were transported to Corcovado by the trains from the railroad that links the street Cosme Velha, which today functions as a tourist train to the top. The train was the first in Brazil appointed exclusively to transportation of tourists and also the first train to work by electricity.
The monument was inaugurated on October 12, 1931. The final design of the monument was of the artist Carlos Oswald and the person in charge of realizing the sculptress was the Frenchman Paul Landowskitura. The monument to Christ, the Redeemer on the Corcovado Mountain is one of the biggest déco sculptures in the world. Up to today, several reforms have been completed to assure the quality of the Christo Redeemer. Lighting has been added, and the latest renewal of September 2002 is the addition of a panoramic elevator and motorized staircase to ease the difficulty for elderly persons.

Taj Mahal

The Taj Mahal is standing majestically on the right bank of River Yamuna at a point where it takes a sharp turn and flows eastwards; the Taj Mahal is synonymous of love and romance. The Taj Mahal complex is organized in a rectangle, measuring approximately 310 x 550 meters. It comprises a number of buildings and structures, all functioning together as the funerary monument for Mumtaz Mahal.
The entire architectural complex mainly consists of five major constituents the Darwaza (The main gateway), Bageecha (The gardens), Masjid (The mosque), Naqqar Khana (The rest house), Rauza (The main mausoleum).
The Taj Ganj area leads to the southern gate into the forecourt of the Taj Mahal complex, although the eastern and western gates of the Jilaukhana are more frequently used by tourists. The latter two gates are identical, with central pointed-arch Pishtaqs flanked by octagonal pilasters crowned with Guldastas (ornamental flower pinnacles).
The southern gate is similar to the east and west ones in its verticality. Due to the natural gradient of the site, which slopes toward the riverbank, this gate lies 2.4 m above the ground elevation of the Jilaukhana itself. Two bazaar streets begin at the east and west gates and lead to the Jilaukhana. The bazaars consist of individual rooms (Hujra) along an arcaded Verandah of multi-cusped arches that are supported on slender columns. The Jilaukhana consists of a large courtyard with 128 hujra rooms opening directly onto the courtyard.
To the northeast of the Jilaukhana are the khawasspuras, two residential enclosures. The north side of the Khawasspuras abuts the southern galleries that flank the great gate to the east and the west. The outer southern corners of the enclosures in the khawasspuras have rooms giving access to latrines. The two Saheli Burj (inner subsidiary tombs) enclosures to the east and west of the Jilaukhana are the tomb complexes of two other wives of Shah Jahan. The saheli burj enclosures have gardens arranged in the Chahar Bagh style, with a pool of water in the center surrounded by paved walkways.
The tomb buildings are octagonal, single-story structures, built on a plinth. The walls are formed of multi cusped arcades. The building and its plinth are clad in red sandstone; the structure is topped by a bulbous white marble dome. Inside, the south door of both of the Saheli Burj tombs leads to the cenotaph within. The colours of the exterior cladding are reversed in the interior: the walls are clad in white marble, while the Jalis and ceiling are sandstone.
The great gate (darwaza-i rauza) is a large structure with triadic openings the base of the gate measures nearly 38 meters and its peripheral walls, including the cupolas, are 30 meters in height. The central Pishtaq, also including the cupolas, is 33 meters in height and 19 meters wide. The gate is composed of red sandstone with decorative panels and accents in white marble.
The entry Iwan contains Muqarnas in red sandstone, which contrasts with the white plaster paint outlining each segment. Topping the central Pishtaq is a series of eleven arches in red sandstone, capped by a chajja. This arrangement of architectural elements into rows is found on both the north and south side of the gate, in keeping with the design of the Taj Mahal complex and its internal hierarchies. The corners of the gateway are accentuated by engaged towers, also of red sandstone, that project outward slightly; these towers are decorated with frames of white marble.
The pointed arch on the south elevation of the darwaza-i rauza partially frames the visitors' first glimpse of the main structure, the mausoleum of Mumtaz Mahal. Flanking the darwaza-i rauza on the north, two double arcaded galleries of multifoliate arches known as the southern galleries, one to the east and one to the west, overlook the large garden that precedes the main mausoleum. The columns of the outer and inner arcades differ only in the decoration of their bases: the outer ones have floral decoration alluding to the garden. The platform of the galleries extends into the garden, and its decorative tile paving pattern faces the garden. The galleries terminate on the east and west ends in rooms which are entered from within the gallery.
A shallow water canal (nahr) runs along the centre of the primary walkways; a line of equidistant water fountains runs down the center of the nahr. Geometric patterns in red sandstone depicting regular and elongated stars decorate the edges of the central pathways running on each side of the nahr. At the intersection of the primary walkways is a raised platform with a square water tank (Hauz) at its center. Five fountains are located within the tank, one at each of its four corners and one in its center. The east-west walkways terminate in two-story pavilions (Naubat Khanas) that merge into the outer garden walls. Aqueducts supplied water to the garden from the Yamuna River just north of the mausoleum. The central fountains operated with an underground system of copper vessels connected by copper pipes. At present the garden contains relatively few trees, consisting mainly of fairly maintained grass lawns.
The two Naubat Khanas (drum houses) are constructed on raised platforms and have two floors. On each level, the naubat khanas have a triple archway in the center of the east and west elevations, respectively. On the ground level, the arches are closed with a Jali screen; on the upper level, they remain open. The floor slab of the upper story projects beyond the wall above and below to form a balcony as long as the building; carved red sandstone handrails run along its length, and carved sandstone brackets help support it from below. The Tahkhana, a gallery of rooms arranged in a row and connected by a narrow corridor, is reached by two staircases that descend from openings in the surface of the plinth to the east and west of the mausoleum.
The secondary, square marble plinth, 93 meters long, is centred on the sandstone terrace. The mausoleum proper and the four minarets flanking it are placed on this marble plinth. The base of the plinth is decorated with delicate carvings of vegetal motifs, which also appear on the white marble cladding of the mausoleum.
In the mausoleum of the Taj Mahal complex, the central chamber is double-height and octagonal in plan. At its center rest the cenotaphs of Mumtaz Mahal and Shah Jahan. The chamber is capped by a shallow dome and decorated with niches on each two-story wall. These niches on the cardinal axes have Jali screens, fitted on the external faces of the walls, which allow light into the room. The niches on the diagonal axes hold rectangular doors. The niches are separated into lower and upper stories by an inscription band that runs around the interior. On the upper level, these frames are replaced by Muqarnas that begin to transform the octagonal plan into a circular ring for the dome. The shallow dome, which is the lower portion of the double dome used for construction, thus appears as decorated with an extended pattern of the Muqarnas that support its base.
The floor of the tomb chamber is tiled with octagonal marble stars in alternating cruciform modules, each outlined with inlaid black stone. Each side of this marble octagonal screen is divided into three panels; only one opens to access the cenotaph. The cenotaph of Mumtaz Mahal is a rectangular block placed on a platform decorated with Quranic verses on the upper block and naturalistic motifs on the lower base.
On the roof of the mausoleum is a high drum, topped with a bulbous dome measuring 25.6 meters high by 17.6 meters wide. Four diagonally placed chhatris flank the drum. The terrace provides a view of the garden below; it is accessed by staircases from the ground floor that lie on either side of the entrance to the mausoleum. The four elevations reflect the symmetry of the mausoleum's plan. The two frames flanking the central Pishtaq contain blind arched niches on the upper and lower levels. Each corner of the building presents a chamfered elevation (to the northeast, northwest, southeast, and southwest).
The frame of the mausoleum's central Pishtaqs, as with other similar forms within the complex, is decorated with an inlaid Thuluth inscription of a Quranic verse. At the Pishtaq's highest point is a linear pattern of floral motifs running between two extended engaged columns capped with guldastas. As compared to the larger central Pishtaqs, these two sub-pishtaqs are less elaborately treated, with pilasters on the outer elevations decorated with an inlaid herringbone pattern in black and dark yellow. These pilasters are flanked by square panels, framed with horizontal and vertical chevrons, at their base.
The mosque and Mihmankhana are located to the west and east of the mausoleum building. Symmetrical and identical in design, it is conjectured from records that the mosque was built first, followed by the Mihmankhana. The mosque has a Mihrab in its Qibla wall, highlighted by a marble frame with an inscription of the Sun Sura. The floor of the mosque also differs from that of the Mihmankhana; it is patterned in Muslim prayer mats. The ceilings are finished in the Sgraffito technique, consisting of a coat of red plaster laid over a white one. Floral designs are later carved through the red layer, to appear in white.
The southwest tower contains a Stepwell (baoli) whereas that to the south of the Mihmankhana holds chambers leading to latrines. The southwest tower with the baoli also has a well shaft running down the centre of the structure and extending through its five floors: three above, two below. The two tower pavilions north of the mosque and Mihmankhana contain chambers leading to latrines on the lower levels, and stairs leading toward the riverbed. The four riverfront towers are each octagonal in plan. Each tower has a central room with an ambulatory path circling around the exterior. The exterior walls have multi-cusped blind arches; each terrace has an Oriel window (Jharoka) with views of the river. The towers are clad in red sandstone and have floral motifs carved in relief with marble inlays on panels.

HISTORY

Taj Mahal was built by the Mughal emperor Shah Jahan (1628-1658), grandson of Akbar the great, in the memory of his queen Arjumand Bano Begum, entitled Mumtaz Mahal a Muslim Persian princess. The queen’s real name was Arjumand Banu. In the tradition of the Mughals, important ladies of the royal family were given another name at their marriage or at some other significant event in their lives, and that new name was commonly used by the public.
She died while accompanying her husband in Burhanpur in a campaign to crush a rebellion after giving birth to their 14th child. When Mumtaz Mahal was still alive, she extracted four promises from the emperor: first, that he build the Taj; second, that he should marry again; third, that he be kind to their children; and fourth, that he visit the tomb on her death anniversary. But this has not been proven to be true, till date.
According to legend, after his wife’s death, Shah Jahan reportedly locked himself in his rooms and refused food for eight days, when the emperor emerged from his seclusion, his black beard visible in many Mughal miniature paintings had turned completely white. For the monument to his wife, Shah Jahan chose a site occupied by sprawling gardens on a bend in the left bank of the Yamuna River. Six months later, her body was transferred to Agra to be finally enshrined in the crypt of the main tomb of the Taj Mahal. The Taj Mahal is the mausoleum of both Mumtaz Mahal and Shah Jahan.
Taj Mahal
The Taj Mahal
The construction of Taj Mahal started in the year 1631 and it took approximately 22 years to build it. It made use of the services of 22,000 labourers and 1,000 elephants for the transportation of the construction materials. The materials used in the Taj Mahal complex are bricks, sandstone and white marble. Brick sizes varied between 18-19 x 11-12.5 x 2.3 cm, a standard size since Akbar's rule. These bricks were baked in kilns on the outskirts of Agra. The sandstone used in the complex has a colour varying from soft red to red with a yellow tint. White marble came from the quarries of Makrana in Rajasthan, approx. 400 kms southeast of Agra. The marble used in the complex was a white one with black and grey streaks.
The greatest technical problem in the construction of the Taj Mahal was its heavy superstructures near the riverfront. This was accomplished using wells cased in wood and filled with rubble and iron, spaced at 3.75 meters on center. Precious and semi-precious stones are used in the decoration of the mausoleum than elsewhere in the complex. These stones include lapis lazuli, sapphire, cornelian, jasper, chrysolite and heliotrope. A strict discipline in colours and decoration is visible in the detailed ornamentation of the Taj Mahal. Floral relief carvings are found on the marble and sandstone walls; these carvings are stylistically related to the pietra dura work, yet are worked according to the material of the building they adorn.
The Taj Mahal architecture is a kind of fusion of Persian, Central Asian and Islamic architecture. Specific design credit is uncertain, and is given by different sources to Istad Usa, Ustad Ahmad Lahori, Isa Muhammad Effendi or Geronimo Veroneo. But construction documents show that its master architect was Istad Usa, the renowned Islamic architect of his time. The documents contain names of those employed and the inventory of construction materials and their origin. And how the entire complex is designed in such a way that the apparent organic unity of the whole does not obscure the individuality of any part, nor does it detract from the prominence of the Taj Mahal proper. It was completed in 1648 at a cost of 32 Million Rupees (more than 750 000 dollars).