Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.

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

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A winding path built in secret on the edge of the continent.

World's first "penitentiary," meant to be humane, drove men insane.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

New York's oldest magic store.

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

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Hot springs monkey spa in the middle of Hell's Valley.

Tucked in the back of this amazing antique store is an important piece of medical history.

A snapshot of the city's fascinating voodoo culture.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Rippling sand dunes frozen in the Arizona rock.

These fantastically named natural pools look like something out of a Scottish myth.