A grumpy old water goblin guarding an old mill on the Devil’s Stream in Prague.

Local folklore claims that this wall was not built for defense, but to provide labor during a time of famine.

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

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

A surreal statue honoring Prague's favorite literary son.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A Jenga-style cylindrical tower of books that appears to go on forever.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

This spooky statue sits outside a famous Prague theater.

This massive stone and steel monument remembers a century-old battle that cost thousands of lives and nearly destroyed the city.

A vast Communist-era exhibition space in the Bulgarian capital.

A striking symbol of the Bulgarian capital.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

Sofia's legislative center is continuously reinventing itself.

"Holy Wisdom" overlooks the city that became its namesake.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

The "Mona Lisa" of funerary art.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

Ancient snack bar of the Roman Empire re-opened.