This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

A pair of connected skyscrapers form this symbolic gateway.

Romania's "Red Ravine" is a little-known natural wonder that bears a resemblance to the Grand Canyon.

Something's watching you.

A Romanian church built from one single oak.

No one knows who built this strange cave of worship or exactly why.

Celebrated example of Ottoman architecture that also served as a site for brutal massacres.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

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

Hans Christian Andersen for the postmodern world.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

This Denmark theme park is part family attraction, part experimental archaeology project.

The oldest amusement park in the world has been providing a nice spot to have some fun since the 1500s.

Oriental bazaar in the heart of Sarajevo.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

A curious cave church carved into the face of a cliff.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

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

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

These warring psychedelic crags commemorate an unsuccessful military operation.

Bridge that died in war and was resurected.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

Six beautiful wooden giants are hidden around Copenhagen.