An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

The final resting place of hundreds of Polish airmen who died fighting the Nazis in Britain.

In the U.K., a historic workhouse shines a light on the early, harsh treatment of the poor.

This 600-year-old tower was built as a comfy residence for cherished pigeons.

One of these two land speed record-breaking vehicles went so fast it shattered the sound barrier.

When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

English Protestants once criticized this enormous private chapel for being too ornate.

A 13th-century inn where the ill-fated King Charles I spent his last night of freedom.

A working farm turned into a museum dedicated to the world's most unbelievably tiny cars.

The last working windmill in the U.K. that has eight sails.

The oldest inn in England served brew to the crusaders.

Legend has it the famous Robin Hood would attend mass at this 12th-century Cistercian abbey in Sherwood Forrest.

The whimsical twist of this spire was either caused by the Devil, an unexpected virgin, or lead.

A striking 500-year-old mansion provides an unexpectedly sublime home for live deer and a menagerie of exotic stuffed animals.

One of the earliest large-scale "hyper" roofs in the U.K. is now a derelict roadside attraction.

This English medieval castle is where King John died of dysentery.

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

"Only the devil could play golf here."

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

Mysterious meeting place for UFO hunters near Area 51.

Odd outsider art installations surround a Gold Rush-era ghost town.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

A Saint Nicholas-themed ghost town in the Mojave desert.