This Czech military museum is home to pink tank that was once a symbol of art and political rebellion.

A peculiar clock commemorates a historic victory won by ringing the noonday bell an hour early.

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

The largest manmade caves in Europe now function as a motorbike club's headquarters.

This network of conjoined cellars was riddled with traps and supposedly allowed the townspeople to pretend their homes were deserted.

The deepest sinkhole in Central Europe comes with a grisly tale and an unusual nickname: “The Stepmother Abyss.”

The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

A bus with a butt and biceps to put Olympic athletes to shame.

Looming communist pillar with a Czech twist.

Two monstrous faces loom over a village in Czechia.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

A church of bones, decorated with 40,000 human skeletons.

Gdańsk's lion mascot features in a trail of bronze sculptures scattered all across the city.

Remnants from a time before electricity.

A massive mammoth bone has been on display inside this church since the 18th century.

Brought to you by the makers of fiberglass dinosaurs.

Hundreds of notes give thanks to the patron saint of lost causes.

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

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

This fairytale medieval church in Poland originally spent centuries in Norway.

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

A striking public sculpture representing the period of martial law in Communist Poland.