These overlooked ruins give an intimate look at the Inca Empire's urban planning prowess.

The sophisticated hydraulic system of the Nazca civilization.

An unexpected desert oasis in South America.

A monument to the conquistador became increasingly controversial in the very city that he founded.

What was once a unique system of urban elevators is turning into a mechanical ruin.

This iconic hilltop church doubled as a lighthouse in the 19th century, guiding ships into the port of Valparaíso.

A museum founded to reflect on and remember the human rights abuses under Chilean dictator Augusto Pinochet.

One of South America's most exclusive resorts has a storied history dating back to World War II.

Spanish religion mixed with local architecture has yielded a network of churches unlike any other.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

This stunning mass of ice spans 121 square miles and is still growing.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

A secluded, little-known temple hidden amid the dense jungle.

A small 12th-century temple surrounded by waters believed to have curative properties.

Though it was originally dedicated to the Hindu god Shiva, Baphuon was converted to a Buddhist temple in the 15th century, complete with a massive hidden statue.

Hoax, mistake, or evidence of dinosaurs in human times?

One of the biggest markets in Asia, under one of the continent's largest domes.

Originally a meeting place for foreign correspondents and war reporters, the FCC remains an atmospheric spot for sunset drinks in Phnom Penh.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Ho Chi Minh's perfectly preserved body has been on display here since 1975.

One of Vietnam's most iconic landmarks was built by Japanese traders and is now in danger of sinking.

This French colonial post office is arguably the grandest in all of Southeast Asia.