Home to the world's oldest functioning orrery.

Religious dwelling in a Spanish volcano.

An enchanting landscape of ancient sandstone structures eroded into otherworldly shapes.

Gargoyle head that brings good luck.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

Located inside a former bread factory, this museum explores a century of transportation history through innovations that were extraordinary or failures—sometimes both.

A swamp and garden tour featuring local wildlife and exotic botanical specimens from around the world.

The world-record holder for the longest bridge stretching continuously over water.

A museum and shop on Bourbon Street located in the French Quarter.

Stockholm's tiniest statue is of a small boy looking at the Moon.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

3,000 market stands in five former Zeppelin hangars.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

Where members of the Crossbow Corps of San Marino demonstrate their skills.

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

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

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

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

An extravagant monument to an extravagantly unpopular Emperor.

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