World's Most-Visited Ancient Ruins
No. 18 Machu Picchu, Peru
Annual Visitors: 1 million
You can take a quick train ride, or approach as the Incas did: by hiking the 27-mile stone-paved trail they built to reach this city on a 7,972-foot-high ridge above the Urubamba River. Machu Picchu looms as a dream trip for many travelers and seems more ancient than it actually is; construction began comparatively recently (around A.D. 1400). After a million visitors in 2011 for the 100th anniversary of its “discovery” by researcher Hiram Bingham—and concerns voiced about the site’s preservation—authorities may limit future visitors to 2,500 a day or 912,500 per year.
Source: Peruvian Times; Smithsonian