This old mining town, deep in the California desert, has a year-round population of one.

The location of the last stand of Charles Manson's doomsday cult.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

Be(w)ar(e) the moat around this historic Czech castle.

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

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

This historic national park is covered in the stunning ruins of red rock pueblos.

The cinder cone volcano with a less than complimentary name.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

An enormous public square and parade ground built to celebrate Ghana's independence.

The clever workshop that has been designing some of the most unusual coffins imaginable.

Where thousands of slaves passed through the "Door of No Return."

This series of rope-style bridges brings visitors into a jungle layer that is usually reserved for birds and monkeys.

The only quarter of the Old City not dedicated to a major world religion.

A "miracle" that seems to produce more holy fistfights than holy revelations.

This exceptionally well-preserved ancient marvel also houses a small museum dedicated to Jordanian folk tradition.