This classic restaurant features a gorgeous mirror-clad room.

Cold war icon and onetime "hole" in the iron curtain.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The most visited, and possibly most controversial, museum in Germany.

"There's nothing there," and other lies the KGB told us.

A former imperial sea-fortress and Soviet prison.

3,000 market stands in five former Zeppelin hangars.

Flamboyant architecture from the turn of 20th century.

A black cat protests the City Guild in Riga's Old Town.

An underground city of salt.

A church of bones, decorated with 40,000 human skeletons.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

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

Macabre astrological automaton clock dating to the late 1400s.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

The final resting place for the remains of 143 Habsburg royalty.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

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

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

This one-time health resort was used by aristocrats around the world.

A whimsical bridge adorned with decorative dragons.

This massive subterranean fissure is known as the "underground Grand Canyon."

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