Travelers watch the sun light up Machu Picchu, Peru

Pictures - - Peru in my mind

Machu Picchu is an archeological wonder located high in the Peruvian Andes that attracts an endless stream of tourists. Archeologists believe it was built between 1460 and 1470 as a royal palace and a religious retreat. When occupied by the Inca ruler, Pachacuti Inca Yupanqui, Machu Picchu had some 200 buildings -- built with granite blocks put together without mortar. Several tour operators offer trips to Peru, which include a visit to Machu Picchu.