The largest lake in the Faroe Islands seems to be held hundreds of feet above sea level thanks to an optical illusion.

This isolated structure beckons adventurers with sublime views of the Faroe Islands.

This isolated island is often capped by its own fluffy cloud.

Veryovkina Cave is more than 1.3 miles deep—the deepest known in the world.

Ruins of a former government building destroyed during the Georgian-Abkhaz war in the wake of the fall of the Soviet Union.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Ancient rock-hewn town that witnessed key events of Georgian history.

Underground monastery and fortress.

The enormous isokinetic structure hangs within a science center in Estonia.

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

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

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

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

Only a fragment of this 15th-century Dance of Death survives today.

Over time, this castle grew to encompass the entire island.

These traffic lights celebrate the 100 year anniversary of the women's suffrage movement in Lithuania.

A century-old prison in the heart of Vilnius is now a lively bar, dance club, and artist residency.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

This magnificent Art Deco church is a reflection of Lithuania’s turbulent history.

Flamboyant architecture from the turn of 20th century.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

The reconstruction of this prominent building fulfilled a long-written command.

This controversial monument was designed to lionize the Red Army, but also disheartened the Latvian people.

Guests become prisoners on a visit to Latvian prison.