An extravagant monument to an extravagantly unpopular Emperor.

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

This network of tunnels housed an entire village for years, and even had a hall for screening movies.

Shipwrecks, ruins, and turtles are all that remain on this haunting Caribbean ghost island.

In the world's most bombed country relative to its size, this incredible organization helps pick up the pieces.

This mysteriously shaped boulder may have been used for human sacrifice in ancient times.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

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

The spot where the two men ate together now stands enclosed in glass.

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

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

Italian poet Dante Alighieri is entombed in this small mausoleum in Ravenna, and his hometown of Florence has never been too happy about it.

Beneath the city of Lourdes, France is a massive, concrete church.

These phallic stone spires once served as Tolkien's Paths of the Dead.

The explorer Captain Cook may have named it White Island, but the Maori call it Te Puia o Whakaari – The Dramatic Volcano.

Only 68 people per day are allowed to visit this New Zealand bird-watcher’s paradise.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

Known as the leaning temple, the sacred structure has somehow developed a severe nine-degree slant.