This memorial museum chronicles the apocalyptic destruction of the First World War.

Take a leisurely walk through the park to find the seven giant troll sculptures hidden throughout the park.

This old Estonian mine has been kept like a sprawling time capsule of the local shale industry.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

This Swiss cemetery is reserved for people who died in climbing accidents.

An ancient Greek monument and a Byzantine church coexist inside this cave.

After a catastrophic forest fire, a Greek artist transformed scorched tree trunks outside an old sanatorium into this haunting sculpture garden.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

An abandoned swimming pool decays on the outskirts of Berlin.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

An astonishingly accurate water clock that doubles as an hourly spectacle in this Berlin shopping area.

Blending modern art with Baroque architecture, this wondrous mosaic grotto serves as the late artist's final creation.

A purr-fectly spirited bronze celebration of local street felines through history.

An aromatic exploration of the rich history and flavors of this German town's famous gingerbread.

This is part of the Francke Foundation Museum, a curiosity cabinet filled with different scientific and natural wonders.

A beautiful gorge filled with streams and waterfalls.

A thought-provoking outdoor art installation sits in the seat of German law.

A massive playground in the woods of Germany.

A six-story, asymmetrical tower filled to the brim with scientific experiments.

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

This public observatory is home to the "celestial cannon," the longest pointable telescope in the world.

An abstract and eyecatching clock/fountain is the centerpiece of this little-known German city.

Inside this German disco, visitors can take a literal ride on the dance floor.