Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A miniature train-ride through Slovenia's largest cave system.

An ancient knight and a symbol of the city's freedom.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

"Unity, Creativity, Beauty."

This building has two facades of clashing architectural designs.

Sofia's legislative center is continuously reinventing itself.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

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

A striking symbol of the Bulgarian capital.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

A collection of art from Bulgaria's time as a communist state.

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

While it would not look out of place among Serbian spomeniks, this massive Bulgarian monument commemorates one of their defeats.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

Fantastic views and thousands of love locks.

This natural "sea of stones" was once used by the Romans as a quarry.