Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

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

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

An abstract monument to a symphonic composer.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

A dead saint, a deadly poison, and a mysterious holy ooze.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

An underground city of salt.

Museum design and public transportation meet in this unique Russian train car.

Built to ward off Napoleon's army, this city-sized abandoned Russian fort is now perfect for urban exploration.

A stone marker and sculpture in the city of Riga stake a claim for the very first community Christmas tree.

This wooden recreation of a 9th century lake village looks as though it was built yesterday (which it relatively was).

Just another terrifying garden filled with hundreds of endlessly smiling doll people.

Surreal works of unreal stone and metal dot the landscape of this Latvian art park.

This impressively complicated radioastronomy research center was once a tool of Soviet spies.

A black cat protests the City Guild in Riga's Old Town.

These crumbling Latvian forts make for some haunting seaside ruins.

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

This micro-nation may be some sort of prank, but its constitution sure seems official.

What almost started out as a spite house became an eccentric's found object masterpiece.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Mysterious craters may have been home to an ancient cult.