Places gwenleif Wants to Go

The bones of this aquatic dinosaur turned to opal over the centuries and the beast's remains were almost sold as jewelry.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.

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

The only diamond mine in the world where you can keep what you find.

Half of a waterfall goes into the river while the other half seems to disappear.

This historical swimming pool near Miami is emptied and refilled each day with naturally filtered water.

This 80-year old mannequin is so lifelike it is believed to be an embalmed corpse.

The atmospheric road was never meant to be so creepy.

A ruined castle has more than its fair share of legends and ghost stories.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

This lush Florida island is home to the ruins of a crooked ship breaker's tiny empire.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

Largest island in the Baltic Sea experiences such idyllic weather that roses bloom in the middle of December.

Submerged ruins of a Neolithic coastal settlement, where houses, wells, graves and skeletons have been unearthed.

The site of a gold-digging conquistador's bloody landing in the Americas.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances.

One of the largest, oldest, darkest, quietest motel rooms in the world.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.