The inverted pyramid design of this station stands out amid Bratislava's urban landscape.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

This building has survived for more than a century and remains virtually untouched.

A forgotten graveyard lost in the tangles of an overgrown garden.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

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

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

The rusting hulk of a Soviet warship sits on a Polish beach.

The original stone marking the interwar border between Germany and Poland sits in this unassuming village park.

Brought to you by the makers of fiberglass dinosaurs.

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

The site of one of the largest prison escapes of World War II.

A collection of modern and vintage pinball machines housed in the cellar of a 15th-century building.

This extensive collection covers thousands of years of Polish military history.

This open-air museum was originally a World War II testing ground for German missiles and rockets.

A tree planted by Marie Curie is treasured by the Radium institute that she set up.

Boats must transform into railroad cars to navigate this Polish canal.

A World War II torpedo launch station abandoned off the Polish coast.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

The silly symbol for an underground protest group is now scattered around the city.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.