An abandoned Cambodian resort that mirrored the downfall of the country as it was happening.

This impressive clifftop temple was once at the center of an international custody dispute.

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

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

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

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

This small fort played a huge role defending Puerto Rico’s capital city.

This colorful palace is an oasis of calm amid the hustle and bustle of the Buriganga riverfront.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

Where a staggering 747 ships were constructed during World War II.

Collective dedicated to restoring steam engines.

A tree grown from astronaut seeds which were exposed to cosmic rays.

Abortion, prohibition, religion, war, and fear all play a part in the history of this idiosyncratic Pacifica castle.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

Made famous by cable TV, this oddball collection of antiques and collectibles is a cut above the rest.

One of the best absinthe distilleries in the United States.

Gorgeous purple flowers drape from the world's largest blossoming plant.

The cobbled together compound of a deceased artist which now serves as a filming location.

Once the gateway to the utopian dream-village of a Civil War embalmer.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

One woman's Viking Castle on Lake Tahoe.

A creepy steel gremlin has protected the Bay Bridge since 1989.