City above the clouds

Machu Picchu, discovered by Hiram Bingham in 1911, is a significant archaeological site in Peru. Once part of the Inca Empire, it features buildings, water systems, and religious altars. The city's purpose remains debated, with theories suggesting it was a retreat for rulers or a religious site. Abandoned in the 16th century, it was reclaimed by nature until its rediscovery. Today, Machu Picchu is a renowned tourist destination and a World Heritage Site, attracting nearly half a million visitors annually.

Why did the Inca abandon Machu Picchu in the 16th century?

How has the purpose of Machu Picchu changed in modern times?