Trekking to one of the 'New Seven Wonders of the World'
When it comes to naming the world's greatest sites, seven seems like an awfully small number. In 2000 a Swiss foundation launched a campaign to determine the New Seven Wonders of the World, modern addition to the ancient Seven Wonders laid out by Philo of Byzantium in 250 B.C., among which only the pyramids of Giza remain. The new list includes the Great Wall of China, Chichén Itzá, the ancient city of Petra, Christ the Redeemer, Colosseum in Rome, Taj Mahal and Machu Picchu. Though the Incan empire was conquered by the Spanish in 1532, the conquistadors did not find the Machu Picchu, which was eventually "discovered" in 1911. The architecture was integrated into the natural terrain, its walls and terraces cut into the rock. Today, it is reached either by hiking up the Incan trail through the Andes or by train. In order to better preserve the structures, the Peruvian government has started to limit the amount of time tourists may spend at the site.