Christ the Redeemer is an Art Deco statue of Jesus Christ in Rio de Janeiro, Brazil, created by French sculptor Paul Landowski and built by Brazilian engineer Heitor da Silva Costa, in collaboration with French engineer Albert Caquot. Romanian sculptor Gheorghe Leonida fashioned the face. Constructed between 1922 and 1931, the statue is 30 metres (98 ft) high, excluding its 8-metre (26 ft) pedestal. The arms stretch 28 metres (92 ft) wide

The statue weighs 635 metric tons (625 long, 700 short tons), and is located at the peak of the 700-metre (2,300 ft) Corcovado mountain in the Tijuca Forest National Park overlooking the city of Rio de Janeiro. A symbol of Christianity across the world, the statue has also become a cultural icon of both Rio de Janeiro and Brazil, and is listed as one of the New7Wonders of the World. It is made of reinforced concrete and soapstone.

History
Vincentian priest, Pedro Maria Boss, first suggested placing a Christian monument on Mount Corcovado in the mid 1850s to honor Princess Isabel, regent of Brazil and the daughter of Emperor Pedro II, but the project was not approved. In 1889 the country became a republic, and due to the separation of church and state, the proposed statue was dismissed.

The Catholic Circle of Rio made a second proposal for a landmark statue on the mountain in 1920. The group organized an event called Semana do Monumento (“Monument Week”) to attract donations and collect signatures to support the building of the statue. The organization was motivated by what they perceived as ‘Godlessness’ in the society. The donations came mostly from Brazilian Catholics. The designs considered for the “Statue of the Christ” included a representation of the Christian cross, a statue of Jesus with a globe in his hands, and a pedestal symbolizing the world. The statue of Christ the Redeemer with open arms, a symbol of peace, was chosen.

Local engineer Heitor da Silva Costa designed the statue. French sculptor Paul Landowski created the work.

In 1922, Landowski commissioned fellow Parisian Romanian sculptor Gheorghe Leonida, who studied sculpture at the Fine Arts Conservatory in Bucharest and in Italy.

A group of engineers and technicians studied Landowski’s submissions and felt building the structure of reinforced concrete (designed by Albert Caquot) instead of steel was more suitable for the cross-shaped statue. The concrete making up the base was supplied from Limhamn, Sweden. The outer layers are soapstone, chosen for its enduring qualities and ease of use.Construction took nine years, from 1922 to 1931 and cost the equivalent of US$250,000 (equivalent to $3,500,000 in 2018) and the monument opened on October 12, 1931.During the opening ceremony, the statue was to be lit by a battery of floodlights turned on remotely by Italian shortwave radio inventor Guglielmo Marconi, stationed 9,200 kilometres (5,700 mi) away in Rome but because of bad weather, the lights were activated on-site.

In October 2006, on the 75th anniversary of the statue’s completion, Archbishop of Rio, Cardinal Eusebio Oscar Scheid, consecrated a chapel, named after Brazil’s patron saint—Our Lady of the Apparition, under the statue, allowing Catholics to hold baptisms and weddings there.

Lightning struck the statue during a violent thunderstorm on February 10, 2008, causing some damage to the fingers, head and eyebrows. The Rio de Janeiro state government initiated a restoration effort to replace some of the outer soapstone layers and repair the lightning rods on the statue. Lightning damaged it again, on January 17, 2014, dislodging a finger on the right hand.

In 2010, a massive restoration of the statue began. Work included cleaning, replacing the mortar and soapstone on the exterior, restoring iron in the internal structure, and waterproofing the monument. Vandals attacked the statue during renovation, spraying paint along the arm. Mayor Eduardo Paes called the act “a crime against the nation”. The culprits later apologized and presented themselves to the police.

In reference to Brazil striker Ronaldo’s usual goal celebration of both arms outstretched, the Pirelli tyre company ran a 1998 commercial in which he replaced the statue while in an Inter Milan strip. The commercial was controversial with the Catholic Church. In 2015 two Russian and Ukrainian urban explorers, Vadis Makhorov and Vitaly Raskalov from Ontheroofs, climbed the statue with captured video footage and photos

Chichen Itza was a large pre-Columbian city built by the Maya people of the Terminal Classic period. The archaeological site is located in Tinúm Municipality, Yucatán State, Mexico.

Chichen Itza was a major focal point in the Northern Maya Lowlands from the Late Classic (c. AD 600–900) through the Terminal Classic (c. AD 800–900) and into the early portion of the Postclassic period (c. AD 900–1200). The site exhibits a multitude of architectural styles, reminiscent of styles seen in central Mexico and of the Puuc and Chenes styles of the Northern Maya lowlands. The presence of central Mexican styles was once thought to have been representative of direct migration or even conquest from central Mexico, but most contemporary interpretations view the presence of these non-Maya styles more as the result of cultural diffusion.

Chichen Itza was one of the largest Maya cities and it was likely to have been one of the mythical great cities, or Tollans, referred to in later Mesoamericanliterature. The city may have had the most diverse population in the Maya world, a factor that could have contributed to the variety of architectural styles at the site.

The ruins of Chichen Itza are federal property, and the site’s stewardship is maintained by Mexico’s Instituto Nacional de Antropología e Historia (National Institute of Anthropology and History). The land under the monuments had been privately owned until 29 March 2010, when it was purchased by the state of Yucatán.

Chichen Itza is one of the most visited archaeological sites in Mexico with over 2.6 million tourists in 2017.

Location
Chichen Itza is located in the eastern portion of Yucatán state in Mexico. The northern Yucatán Peninsula is arid, and the rivers in the interior all run underground. There are four visible, natural sink holes, called cenotes, that could have provided plentiful water year round at Chichen, making it attractive for settlement. Of these cenotes, the “Cenote Sagrado” or Sacred Cenote (also variously known as the Sacred Well or Well of Sacrifice), is the most famous. In 2015, scientists determined that there is a hidden cenote under Kukulkan, which has never been seen by archaeologists.

According to post-Conquest sources (Maya and Spanish), pre-Columbian Maya sacrificed objects and human beings into the cenote as a form of worship to the Maya rain god Chaac. Edward Herbert Thompson dredged the Cenote Sagrado from 1904 to 1910, and recovered artifacts of gold, jade, pottery and incense, as well as human remains. A study of human remains taken from the Cenote Sagrado found that they had wounds consistent with human sacrifice.

History
The layout of Chichen Itza site core developed during its earlier phase of occupation, between 750 and 900 AD. Its final layout was developed after 900 AD, and the 10th century saw the rise of the city as a regional capital controlling the area from central Yucatán to the north coast, with its power extending down the east and west coasts of the peninsula. The earliest hieroglyphic date discovered at Chichen Itza is equivalent to 832 AD, while the last known date was recorded in the Osario temple in 998.

MachuPicchu is a 15th century Incacitadel, located in the Eastern Cordillera of southern Peru, on a 2,430-metre (7,970 ft) mountain ridge. It is located in the Cusco Region, Urubamba Province, Machupicchu District, above the Sacred Valley, which is 80 kilometres (50 mi) northwest of Cuzco and through which the Urubamba River flows, cutting through the Cordillera and creating a canyon with a tropical mountain climate.

Most archaeologists believe that Machu Picchu was constructed as an estate for the Inca emperor Pachacuti (1438–1472). Often mistakenly referred to as the “Lost City of the Incas” (a title more accurately applied to Vilcabamba), it is the most familiar icon of Inca civilization. The Incas built the estate around 1450 but abandoned it a century later at the time of the Spanish Conquest. Although known locally, it was not known to the Spanish during the colonial period and remained unknown to the outside world until American historian Hiram Bingham brought it to international attention in 1911.

Machu Picchu was built in the classical Inca style, with polished dry-stone walls. Its three primary structures are the Intihuatana, the Temple of the Sun, and the Room of the Three Windows. Most of the outlying buildings have been reconstructed in order to give tourists a better idea of how they originally appeared. By 1976, thirty percent of Machu Picchu had been restored and restoration continues.

Machu Picchu was declared a Peruvian Historic Sanctuary in 1981 and a UNESCO World Heritage Site in 1983. In 2007, Machu Picchu was voted one of the New Seven Wonders of the World in a worldwide Internet poll.

History

Machu Picchu was built starting 1450–1460. Construction appears to date from two great Inca rulers, Pachacutec Inca Yupanqui (1438–1471) and Túpac Inca Yupanqui (1472–1493). There is a consensus among archaeologists that Pachacutec ordered the construction of the royal estate for himself, most likely after a successful military campaign. Though Machu Picchu is considered to be a “royal” estate, surprisingly, it would not have been passed down in the line of succession. Rather it was used for 80 years before being abandoned, seemingly because of the Spanish Conquests in other parts of the Inca Empire. It is possible that most of its inhabitants died from smallpox introduced by travelers before the Spanish conquistadors arrived in the area.

Construction

 The central buildings use the classical Inca architectural style of polished dry-stone walls of regular shape. The Incas were masters of this technique, called ashlar, in which blocks of stone are cut to fit together tightly without mortar.

The section of the mountain where Machu Picchu was built provided various challenges that the Incas solved with local materials. One issue was the seismic activity due to two fault lines. It made mortar and similar building methods nearly useless. Instead, the Inca mined stones from the quarry at the site, lined them up and shaped them to fit together perfectly, stabilizing the structures. Inca walls have many stabilizing features: doors and windows are trapezoidal, narrowing from bottom to top; corners usually are rounded; inside corners often incline slightly into the rooms, and outside corners were often tied together by “L”-shaped blocks; walls are offset slightly from row to row rather than rising straight from bottom to top.

Heavy rainfall required terraces and stone chips to drain rain water and prevent mudslides, landslides, erosion, and flooding. Terraces were layered with stone chips, sand, dirt, and topsoil, to absorb water and prevent it from running down the mountain. Similar layering protected the large city center from flooding. Multiple canals and reserves throughout the city provided water that could be supplied to the terraces for irrigation and to prevent erosion and flooding.

The Incas never used wheels in a practical way, although their use in toys shows that they knew the principle. The use of wheels in engineering may have been limited due to the lack of strong draft animals, steep terrain and dense vegetation. The approach to moving and placing the enormous stones remains uncertain, probably involving hundreds of men to push the stones up inclines. A few stones have knobs that could have been used to lever them into position; the knobs were generally sanded away, with a few overlooked

You all know about the 7 wonders of the world but in this blog we are going talk about top 4 wonders of the world. First of all we will gather some information about the wonder present in India that is Taj Mahal.

About Taj Mahal 

The Taj Mahal  meaning “Crown of the Palaces”) is an ivory-white marble mausoleum on the south bank of the Yamuna River in the Indian city of Agra. It was commissioned in 1632 by the Mughal emperor, Shah Jahan (reigned from 1628 to 1658), to house the tomb of his favourite wife, Mumtaz Mahal. It also houses the tomb of Shah Jahan, the builder. The tomb is the centerpiece of a 17-hectare (42-acre) complex, which includes a mosque and a guest house, and is set in formal gardens bounded on three sides by a crenellated wall.

Construction of the mausoleum was essentially completed in 1643 but work continued on other phases of the project for another 10 years. The Taj Mahal complex is believed to have been completed in its entirety in 1653 at a cost estimated at the time to be around 32 million rupees, which in 2015 would be approximately 52.8 billion rupees (U.S $827 million). The construction project employed some 20,000 artisans under the guidance of a board of architects led by the court architect to the emperor, Ustad Ahmad Lahauri.

The Taj Mahal was designated as a UNESCO World Heritage Site in 1983 for being “the jewel of Muslim art in India and one of the universally admired masterpieces of the world’s heritage”. It is regarded by many as the best example of Mughal architecture and a symbol of India’s rich history. The Taj Mahal attracts 7–8 million visitors a year and in 2007, it was declared a winner of the New7Wonders of the World (2000–2007) initiative.

Inspiration

The Taj Mahal was commissioned by Shah Jahan in 1631, to be built in the memory of his wife Mumtaz Mahal, a Persian princess who died on 17 June that year, giving birth to their 14th child, Gauhara Begum. Construction started in 1632, and the mausoleum was completed in 1643, while the surrounding buildings and garden were finished five years later.The imperial court documenting Shah Jahan’s grief after the death of Mumtaz Mahal illustrates the love story held as the inspiration for the Taj Mahal.

Construction

The Taj Mahal is built on a parcel of land to the south of the walled city of Agra. Shah Jahan presented Maharajah Jai Singh with a large palace in the centre of Agra in exchange for the land. An area of roughly 1.2 hectares (3 acres) was excavated, filled with dirt to reduce seepage, and levelled at 50 metres (160 ft) above riverbank. In the tomb area, wells were dug and filled with stone and rubble to form the Footings of the tomb. Instead of lashed bamboo, workmen constructed a colossal brick scaffold that mirrored the tomb. The scaffold was so enormous that foremen estimated it would take years to dismantle.

The Taj Mahal was constructed using materials from all over India and Asia. It is believed over 1,000 elephants were used to transport building materials. It took efforts from 22,000 labourer, painters, embroidery artists and stonecutters to shape the Taj Mahal. The translucent white marble was brought from Makrana, Rajasthan, the jasper from Punjab, jade and crystal from China. The turquoise was from Tibet and the lapis lazu from Afghanistan, while the sapphire came from Sri Lanka and the carnelian from Arabia. In all, twenty-eight types of precious and semi-precious stones were inlaid into the white marble.

According to the legend, Shah Jahan decreed that anyone could keep the bricks taken from the scaffold, and thus it was dismantled by peasants overnight. A 15-kilometre (9.3 mi) tamped-earth ramp was built to transport marble and materials to the construction site and teams of twenty or thirty oxen pulled the blocks on specially constructed wagons. An elaborate post-and-beam pulley system was used to raise the blocks into desired position. Water was drawn from the river by a series of purs, an animal-powered rope and bucket mechanism, into a large storage tank and raised to a large distribution tank. It was passed into three subsidiary tanks, from which it was piped to the complex.

The plinth and tomb took roughly 12 years to complete. The remaining parts of the complex took an additional 10 years and were completed in order of minarets, mosque and jawab, and gateway. Since the complex was built in stages, discrepancies exist in completion dates due to differing opinions on “completion”. Construction of the mausoleum itself was essentially completed by 1643 while work continued on the outlying buildings continued for years. Estimates of the cost of construction vary due to difficulties in estimating costs across time. The total cost at the time has been estimated to be about 32 million Indian rupees, which is around 52.8 billion Indian rupees ($827 million US) based on 2015 values.