Great Wall of China
A series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China.
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Petra
An ancient city in Jordan, famous for its rock-cut architecture and water conduit system. Established possibly as early as 312 BC as the capital city of the Nabataeans.
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Colosseum
An oval amphitheatre in the centre of the city of Rome, Italy. Built of travertine limestone, tuff, and brick-faced concrete, it was the largest amphitheatre ever built.
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Chichen Itza
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.
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Machu Picchu
A 15th-century Inca citadel located in the Eastern Cordillera of southern Peru on a 2,430-meter (7,970 ft) mountain ridge.
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Taj Mahal
An ivory-white marble mausoleum on the right bank of the river Yamuna in Agra, Uttar Pradesh, India. It was commissioned in 1632 by the Mughal emperor Shah Jahan.
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Christ the Redeemer
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.
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