This metro station doubles as an unintentional paleontology museum.

This sculpture used famed boxer Joe Louis as the inspiration behind its body.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

A museum dedicated to the former country.

This 135-year-old weather station studied the effects of the climate on human health.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

A well-worshipped shrine to the Virgin Mary nestled inside the last of Zagreb’s historic gates.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

This historic cemetery was inaccessible for several years due to dozens of land mines.

The place where World War I began.

The haunting ruins of a military fortress turned astronomical observatory sit on a Sarajevo mountaintop.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

A fake Transylvanian castle houses a cathedral of antlers.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

Workers have collected salt here in a process virtually unchanged since the Middle Ages.

A whimsical bridge adorned with decorative dragons.

Buy raw milk from a 24/7 vending machine or pick up tomb candles at this local market.

Inspired by the Rialto Bridge in Venice, these three clustered bridges were just one part of a Slovenian architect’s grand vision.

A public work of art that also provides some relief from the summer heat.

When this monument to Slovenia's national poet was erected, it's said to have sparked the ire of nearby church authorities.

Once the home of a hermetic monk, this cave now houses a small church.

Bangkok's men with dangerous jobs come here in search of protective talismans.