Human remains in varying states of decay are strewn about this Texas State facility for scientific study.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

Two massive and unstable sinkholes are yearning to unite, and their consummation could be catastrophic.

An incredibly well-preserved piece of ninth-century Viking poop.

Follow the original medieval paths that wind through this intriguing section of the city.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

World's largest collection of serial killer artwork and other macabre exhibits.

A psychedelic labyrinth on the San Francisco bay.

An artsy hidden staircase leads to breathtaking views of San Francisco.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

A huge musical instrument played by the ocean.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

Unusual house, in an unusual neighborhood, home to some very unusual peanuts.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A collection of 100 brains preserved in jars on the UT campus.

A view-altering observatory at the University of Texas.

Free public park and gardens filled with peacocks and peahens.

This small town Texas cemetery is said to be the burial site of a UFO pilot who crashed in the 1800s.

On a dusty county road sit the ruins of a ghost town's abandoned church.

A popular swimming hole that hides one of America's most deadly diving spots.

Victims of the Webster Massacre are buried here in a mass grave.

An emerald-green grotto just a short trip from Austin.

This beautiful grotto is one of those places where you can't believe you're just outside Austin.

No one is sure why this mysterious tradition started.