Built on a medieval synagogue, this church has a burial crypt, tunnel system, and Jewish ritual bath hiding deep underneath.

Italian cave with exceptional acoustics and an unsavory history.

142 ceramic steps become a mosaic once a year.

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

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

A cheeky architectural easter egg.

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

This strange statue depicts a young boy's body with an adult Mozart's head and a single wing.

A peculiar samurai statue overlooks the center of Brno.

Once overlooking the town, this church now resides on a permanent tilt.

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

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

One of the oldest, well-preserved water treatment facilities in all of Europe.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

A saintly relic hidden in a Prague church basement.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

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

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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

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

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

A crucified and bearded female saint.