This fairytale medieval church in Poland originally spent centuries in Norway.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

This mysterious and once-grand memorial still embodies a remarkable architectural vision.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

The two abandoned overpasses are among the largest bridges in Poland.

A peculiar family mausoleum built by a German nobleman captivated by the occult.

This unique railroad museum secretly contains the history of Poland rebuilding itself from the inside-out.

The shattered remains of the world's once tallest structure.

The oldest housing complex in Riga is a mini timeline of architectural trends.

Flamboyant architecture from the turn of 20th century.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

The oldest funicular in Lithuania has been climbing this steep hill since 1931.

This unique Lady Liberty is one of the only examples of the figure sitting down.

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

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

Elaborate mansions built by Roma residents in Soroca to show their success after centuries of discrimination.

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

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

One of Hungary's most influential places of learning is also home to one of the world's most beautiful libraries.

A statue honors the children who fought Nazis in Poland.