12,000 sq. ft. museum tracing erotic art from antiquity to modern times.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

It's a pretty creepy lock-up.

Just below the surface, shrimp are producing temperatures hotter than the sun.

In Florida, these naughty monkeys live on their own mini-monkey Alcatraz.

Human skulls and a stuffed goat made into a rocking chair can be found at this strange little store.

A luxuriant botanical garden below sea level.

"Bite or Smite" became the unlikely mascot of a Tampa suburb.

Florida castle built with aluminum printing plates.

Given just one more year to live, Conrad Schuck built his dream house in Bartow, Florida.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

Astonishing collection of helmets, scientific instruments, and medical models.

This derelict building used to house infirm Freemasons, their widows, and orphans.

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

Decades after testing the polio vaccine on unwitting patients, this historic mental hospital sits in ruin.

One man's swirling six-acre monument of stone.

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

Possibly the smallest church in the world floats in the middle of a pond.

This tiny little island has, as the name says, just enough room for its single house.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

This natural rock "church" might not be a proper chapel but that doesn't mean it's not beautiful.

This old cement mine has been used as everything from a mushroom farm to a recording studio.

In upstate New York, gorgeous waterfalls and a watermill are slowly being reclaimed by nature.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.