Belly up to the bar in Cowtown, don't forget to buy some boots.

A registered historic landmark shrouded in unsettling local legends.

Continuing the tradition of the dime museum in style.

Three hundred years of preserved Spanish colonial history in San Antonio.

Wander among the gravestones in this historic border town.

The second-largest giant sequoia in the world.

Legends surround this jagged rock formation in the New Mexico desert.

Check out a hidden collection of vintage neon signs.

The largest self-built castle in the U.S., six decades in the making.

An eerie, derelict amusement park in Berlin.

Where once there was a train station bathroom, there is now this German burger joint.

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

The most visited, and possibly most controversial, museum in Germany.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

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

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

At this museum in Iceland, visitors can sample fermented Greenland shark.

One of the oldest family businesses in Reykjavík serves lamb-based hot dogs.

This stunning concert hall has become a symbol of Iceland's national recovery.