In between two buildings in Ljubljana, medieval tunnel to nowhere.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.

Outside of Budapest, a reconstruction of a 16th-century fortress.

Budapest's Communist-era statues, banished to the suburbs.

You've probably seen these distinctive orange-tiled columns on the big screen.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

300 years of pharmaceutical history on display.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

The metal leaves on this tree are engraved with the names of Holocaust victims.

A scene from one of Hungary's most famous novels.

On Gellért Hill, this statue depicts the tragic tale of lovers divided by the Danube.

This sculpture honors the man who was known as the "Righteous Among the Nations."

Europe's second largest ossuary wasn't discovered until 2001.

Mummified monks and the accidentally interred, in a 17th-century crypt.

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

This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

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

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.