This medieval Estonian tower provides access to a series of tunnels that have been home to soldiers, punks, and fine art.

This abandoned fighter jet launch center is now a haunting street racing course.

This Soviet-era "closed town" was a top secret uranium producer often left off of maps.

This peculiar border irregularity is the only way to legally enter Russia without a visa.

Wars fought and wars won are remembered by these abandoned bunker ruins.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

Spend your honeymoon where the Devil had his wedding.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

A decommissioned submarine base makes a great space for graffiti art.

The gutted remains of this Estonian mansion are a monument to a tragic love.

Mysterious craters may have been home to an ancient cult.

"There's nothing there," and other lies the KGB told us.

How this choice of tombstone came to be is still a mystery.

The statue of a legendary giant who carried Christ and shouldered the world's sins.

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

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

A small museum contains one of the largest collections of ethnic and traditional headgear in the world.

A vast and unlikely aviation museum kept alive for over 50 years due to one man's tenacity.

Guests become prisoners on a visit to Latvian prison.

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

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

Medical museum that houses most notably the taxidermied remains of Vladimir Demikhov's famous two-headed dog experiment.

These crumbling Latvian forts make for some haunting seaside ruins.