The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

Stockholm's narrowest alley is barely over two feet wide.

This island castle now hosts a world-famous opera festival.

This church also serves as a lighthouse complete with a beacon.

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

A unique sculpture calls the outside of this steakhouse home.

This free museum is building a collection of books that are banned, censored or burnt around the world.

Spend your honeymoon where the Devil had his wedding.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

A historic and beautiful Art Nouveau chamber in a historic railway station.

The largest caravanserai in Cyprus also includes amazing examples of Ottoman architecture.

This no man's land slicing through the island is strewn with abandoned relics of another time.

The ancient mosaics here are considered among the finest in the world, and serve as a stunning record of Greco-Roman daily life.

Rebuilt several decades ago, its striking murals prevent it from being reconsecrated as a church.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.