Machu Picchu: Top Photos

Lost city of the Inca, hidden in the clouds

The Sacred Plaza, Machu Picchu, Peru
The Sacred Plaza, Machu Picchu — the ceremonial core of the citadel, flanked by the three-windowed temple and the principal temple, the largest structure at the site. The three windows may represent the three worlds of Inca cosmology: the underworld, the earth, and the heavens. © Kuruman, CC BY 2.0, via Wikimedia Commons

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