Seven alternative wonders of the world

Towers of the legendary Angkor Wat temple north of Siem Reap, about 230km northwest of the capital Phnom Penh, Cambodia. Siem Reap is Cambodia's main tourist destination. Photograph: AP Photo/Heng Sinith/AP

Seven huge statues, or moais, stand facing the sea in Ahu Akivi in Easter Island, 3700 km off the coast of Chile. The Chilean island is in the Polynesian archipelago and has been on UNESCO's World Heritage Site list since 1995. Photograph: Martin Bernetti/AFP/Getty Images/Getty

The Great Wall of China near Beijing. The Great Wall is the world's longest man-made structure, stretching over 6,352 km (3,948 miles) from Shanhai Pass in the east to Lop Nur in the west. Photograph: Guang Niu/Getty Images/Getty

The Inca ruins of Machu Picchu, 120km from Cuzco, Peru. Built by the Sapa Inca Pachacuti in about 1440, it was inhabited until the Spanish conquest of Peru in 1532. It is thought that Machu Picchu was not a conventional city, but a country retreat town for Inca nobility. Photograph: HO/AFP/Getty Images/Getty

Tikal in Guatamala is the largest of the ancient ruined cities of the Maya civilization. One of the Maya's major cultural and population centers it dates back to 400BC and was at its peak from AD200 to AD850. Photograph: AP

Tourists stand at the base of the Treasury of the Pharoah, a tomb at the Petra archaeological site in Jordan. Petra, once the capital for the Nabateans people, was a sprawling city that was carved into solid rock during the Nabateans' peak over 2,000 years ago. Photograph: Chris Hondros/Getty Images/Getty

Stonehenge is a Neolithic and Bronze Age megalithic monument near Amesbury in Wiltshire, England. One of the most famous prehistoric sites in the world it was built between 2500 BC and 2000 BC. Photograph: AP