Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

Rare wooden escalators lead deep down into an otherwise staggeringly monotonous tiled tunnel.

The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

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

Seventy-five miles of limestone caves host more than a million bottles of wine beneath a sleepy Moldovan town.

A vivid and terrifying mural blends pop-culture-style depictions of Hell with traditional Orthodox imagery.

Once built to inspire young Soviet minds through astronomy, this dome now stands as a quiet relic of a vanished era.

Once the tallest building in Chisinau, this unique tower is a relic of Soviet architecture.

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