Glowing orb in Minsk houses 8,600,000 items.

Thanks to its heroic service during WWII this Soviet castle has been turned into a monument towered over by a brutalist titan.

Vienna's diversity-themed traffic lights were inspired by the Eurovision Song Contest.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

The world's oldest known salt mine.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Baroque celebration of the end of the Great Plague of Vienna.

Giant stone letters dedicated to the founder of Armenia's alphabet.

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

The most visited pilgrimage site in Armenia once held a saint in a pit for 13 years.

Its humdrum facade only adds to its electrifying appeal: a rooftop with panoramic views of a shapeshifting metropolis.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

A gigantic collection of teeny, tiny books.

A shrine of fire worship built on top of a natural flame.

Mysterious hillside with a continuously burning natural fire.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

The world's only silo that was topped by two revolving restaurants has unfortunately been demolished.

World's largest barrel containing an inn.

A modern museum dedicated to the fairytales and dictionary work of the Brothers Grimm.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

This futuristic German television spire is actually the world's largest digital clock.

The entrance to this Frankfurt subway station looks like an old tram car crashed into the concrete sidewalk.