This fancifully decorated Victorian home in New York’s Hudson Valley is the only known fully domed octagonal residence in the United States.

After Sierra Leone's railways shut down in 1974, a collection of engines and other artifacts spent decades hidden away in this old workshop—now a museum.

Take a ride back in time with a steam locomotive trip through Eritrea’s mountainous countryside.

A war-torn Olympic relic is being overtaken by graffiti and nature.

For a buck, students can snag freshly picked apples grown in the university orchards.

A top secret Cold War bunker hidden beneath a Latvian spa facility is now open for tours.

In the foothills of the lesser Caucasus, a centuries-old fortress still stands.

Plans for this peninsula included houses, the United Nations Headquarters, and a nuclear power plant. When none of them worked out, it became an expansive park.

An abandoned masterpiece of Soviet Brutalist architecture.

Things aren't quite what they seem at this mind-bending museum.

The pyramid and dome deep inside the Dzūkija forest are believed to channel divine energy.

A curious art park at the geographic center of Europe is home to 3,000 television sets and other wonders.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

The half-finished remains of what would have been Scotland’s biggest piece of landscape art.

In the mountains of West Virginia is this perfectly preserved Art Deco train station.

This stimulating sex toy museum is sure to arouse the interest of its visitors.

An abandoned castle owned and ignored by Masons carries a cursed history.

A cave 150 feet beneath Kansas City is the perfect climate for growing 10,000 delicate orchids.

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

This unconventional used book store was once in the news for the surprising act of burning books.

This Kansas City studio was home to Walt Disney's first animation business.

The famous greeting card maker owns a collection of paintings by the famed surrealist.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

The once-grand remains of this resort are slowly turning into the strange ruins of the future.