The oldest Buddhist monastery in Mongolia has survived centuries of invasions, political shifts, and religious purges.

History, geography, and shamanism meet in this eye-catching monument to the greatness of three empires.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

Hot springs monkey spa in the middle of Hell's Valley.

A museum dedicated to the alleged Roswell Incident.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A 20-meter (65-foot) robot towers over Tokyo Bay.

This Scottish bridge seems to compel dogs to leap to their death.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

The world's largest reflecting pool is just two centimeters deep.

Double spiral staircases are not unheard of, but they are very rare.

This massive wooden building contains a giant Buddha, healing pillars, and tame deer wandering the grounds.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

Rising from the sea like a stone monster.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A Cold War secret surveillance tower used to spy on radio communications.

A church of bones, decorated with 40,000 human skeletons.

In the town of Třeboň, carp is king.

This Czech military museum is home to pink tank that was once a symbol of art and political rebellion.

This unusually shaped mountaintop tower looks like a UFO floating over the city.

Europe's largest natural bridge has a 19th century royal chateau built into its side.