A Cold War secret surveillance tower used to spy on radio communications.

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

An enormous and lavish Gothic church in Czechia.

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

The 14th-century ruins are said to contain healing powers.

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

The rusted creatures wait to be discovered in Prague's botanical garden.

A massive 1830s industrial site once known as Czechia's "Iron Heart" has been transformed into a playground of science, technology, and art.

A cheeky architectural easter egg.

This spooky statue sits outside a famous Prague theater.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

The mystery of the Putim Ossuary involves a tricorn hat.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

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

These 17th-century mummies are no longer naturally preserved, but remain on display today.

A surreal statue honoring Prague's favorite literary son.

A series of playful yellow penguins share a serious message about the environment.

Mysterious painted skulls in Moravia.

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

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

The oldest garden in Prague, once part of an medieval orchard.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

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

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.