This sign marks the entrance to a tiny proto-state within the small country of Moldova.

This 13th century Orthodox monastery is built right into the Moldovan cliffside.

A forgotten remnant of the Soviet Union, Transnistria is an unrecognized country hidden behind a heavily militarized border between Moldova and Ukraine.

The largest wine cellar in the world is a 150-mile network of underground caves near the capital of Moldova.

Where the lovelorn find a home for their sentimental keepsakes.

Its frescoes depict the likeness of Marshal Tito, Karl Marx, and Friedrich Engels burning in hell.

This statue of the famed author, actor, and journalist is made entirely of screw-nuts.

Nikola Tesla's ashes are held in a golden sphere, surrounded by his works.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This hidden collection of everyday objects illustrates life within communist Poland.

Metro station with a claim to rock n' roll fame.

A fascinating insight into daily life in the Eastern Bloc.

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

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

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

Copenhagen's celebrated theme park and gardens.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.

This lavish estate recalls the opulent history of Calcutta.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

This church also serves as a lighthouse complete with a beacon.