This colorful gate stands as an entrance to the walled city of Old San Juan.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

The abandoned site of the Beatles spiritual awakening and subsequent revolt.

The Hindu god Vishnu is said to have walked at this Hindu pilgrimage site.

This 13th century Gothic brick castle is the largest in the world by surface area.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

White llama terraces dazzle in Peru's "other Machu Picchu."

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

An unexpected desert oasis in South America.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

The center of the only hemisphere that awards visitors with a commemorative coin.