Museum dedicated to the terror regimes of Hungary.

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

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

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

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

Look closely, and you'll see this rusty man is crying.

This cobblestoned medieval-style town was entirely constructed in the 1990s and 2000s.

This Swedish automobile graveyard is a beautiful gallery of decay, but woe be to any who would steal a souvenir.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

One of the world's tallest statues is also one of its most hated.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

This building holds the embalmed remains of the leader of the Bolshevik Revolution.

Macabre astrological automaton clock dating to the late 1400s.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Started as a kitchen garden, now the second largest botanical garden in the world.

Catacombs turned marketplace.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

An ancient neolithic tomb that only sees the sun twice a year.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.