Alternately defined as a sanctuary and a citadel, Machu Picchu was constructed sometime in the mid-15th century, possibly by Pachacuti, the Sapa Inca who defeated the Chancay tribe and expanded ...

Check with the U.S. Department of State before traveling. Machu Picchu is thought to be one of the largest and most impressive Incan cities of its time. Today a UNESCO World Heritage Site with ...