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

A 300-kilogram egg sculpture that embodied a neighborhood revival.

The Frank Zappa fan club erected this monument to their prog-rock hero to mark a new era of post-Soviet Lithuania.

An abandoned masterpiece of Soviet Brutalist architecture.

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

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

Flamboyant architecture from the turn of 20th century.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A mechanized clock where a man fights off a dragon, crab, and rooster.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

"Only the dead get off at Kymlinge."

Frequent fliers welcome in this airplane hotel.

No one knows who's responsible for decorating this tunnel with stuffed animals, but the people love it enough to protest their removal.

The remains of Alfred Nobel's first nitroglycerine factory can still be found on the shores of a Swedish bay.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

Sweden's oldest animated sign is still lighting up the skyline today.

Street artists transformed this abandoned industrial neighborhood into one of Europe's largest graffiti exhibitions.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

The stunning interior of this Gothic church is covered in ornate gold details.

A hidden three-foot-wide house separates these two regal churches.

One of the largest museums in Ukraine remembers the story of the German-Soviet War in iconic, brutalist style.