Although a controversial Chinese research asserts the length is 13,170 miles (21,200 km), the Great Wall of China is generally believed to be 5,500 miles (8,850 km) long.
Chichén Itzá
During the ninth and tenth century CE, the Mayan metropolis of Chichén Itzá prospered on the Yucatán Peninsula in Mexico.
Petra
Nestled between cliffs and sandstone rocks in a secluded valley lies the ancient city of Petra, Jordan.
Machu Picchu
Hiram Bingham "discovered" an Incan site in Cuzco, Peru, in 1911. Bingham thought it was Vilcabamba, a hidden Incan fortress utilized in the 16th-century struggle against Spanish control.
Christ the Redeemer
Large statue of Jesus known as Christ the Redeemer is located atop Rio de Janeiro's Mount Corcovado.
Colosseum
Emperor Vespasian gave the order for the construction of the Colosseum in Rome during the first century.
Taj Mahal
The infamous Taj Mahal was commissioned by Shah Jahan in 1631, to be built in the memory of his wife Mumtaz Mahal. Shah Jahan severed the laborers' hands following completion.