Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

Tubing through a cave lit with glowworms is a magical underground experience.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

How did a French journalist’s grave become the sexiest statue in the cemetery?

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

This museum houses an imposing skeleton army comprised of creatures great and small.

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

Wading through a small lagoon reveals a secret, wild stretch of pristine beach.

A swamp that was the site of prehistoric water burials also managed to preserve its corpses for millennia.

Visitors to this shop will find fossils, minerals, meteorites, skeletons, oddities, and much more.

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

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

This kitsch eatery is chock-a-block with bric-a-brac.

A haunted hill that supposedly defied gravity.

Florida castle built with aluminum printing plates.

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

This Florida resort community is where the Amish come to have fun in the sun.