Khmer Rouge's high security prison.

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

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

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

Take a hidden path to the mouth of the cave to watch millions of bats swarm at sunset.

A gruesome memorial for those lost in this area during the Khmer Rouge genocide.

Arguing within this idyllic, circular volcanic lake is forbidden.

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

Cavemen, elephants, and eagles greet passengers driving through the town's main intersection.

A dazzling temple featuring a towering 12-meter golden Buddha.

This extensive collection of dead bugs may be the world's most idiosyncratic and personal insect museum.

A white Buddhist temple with a golden restroom.

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.

Thousands of effigies of Buddha watch from caves set high above a legendary river, plus whiskey.

More than 200 statues filled with cryptic symbols give this park spot an aura of horror vacui fantasy.

When the USA donated cement and funds to expand the airport in Laos, the Laotians built a massive monument instead.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.