This ornate church has survived Nazi and Soviet occupation, including a short stint as a Soviet-era gymnasium and cinema.

These abandoned vessels are destined to be reclaimed by the forest.

Mysterious heaps of stones dot these otherworldly woods.

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

The widest waterfall in Europe is a natural wonder and one of the only places where fish are caught in the air.

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

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

These crumbling Latvian forts make for some haunting seaside ruins.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

First point in the Struve Geodetic Arc, a 19th century undertaking to measure the Earth's size and shape.

Tombstones buried in overgrown grass mark the deceased occupants of this abandoned graveyard.

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

A secluded art gallery hidden within the cellars beneath Tallinn’s medieval monastery.

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

A trio of giant wooden megaphones turn up nature's volume in this Estonian forest.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.

Mysterious craters may have been home to an ancient cult.

The ruins of an Estonian prison are drowning in the quarry lake where the convicts were once forced to work.

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

A replica of the home of a famous fictional troll family.

An abstract monument to a symphonic composer.

Architecturally stunning library serves as the hub of Finnish scholarly life and culture.

An alien church provides much needed silence in the midst of a Finland shopping center.

A subterranean house of worship carved right out of the bedrock.