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

A collection of old neon signs from all over Poland line a secluded courtyard.

A mysterious concrete hand reaches out from between the stones of Uniwersytecki bridge.

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

Relive a Polish uprising via an enormous, century-old cyclorama.

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

This ex-prison dates back to the Middle Ages.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

One of the few German synagogues to survive the Kristallnacht pogrom has been beautifully restored.

After falling into disuse, this imposing department store found new life as a Hollywood backdrop and a theater.

This bust remembers the haunting local legend of a murderous monk.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

This small exhibition displays equipment and artifacts once belonging to the feared Stasi secret police.

One of the most iconic neon ads of former East Germany.

It's good luck to be mocked by this monkey.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

This small train ride offers stellar views of the Grand Garden Palace.

A very classy 1920s-era bar right in Grand Central Station.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.