Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

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

This nearly abandoned plantation was once witness to an eclipse that proved Einstein's theory of relativity.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Beating out all other concrete competitors, this massive garden feature's pointy hat has earned it a world record.

Hidden among the multi-million dollar mansions in the Santa Cruz hills is a sanctuary for troubled birds.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

For over 30 years the walls of this Harlem schoolyard have been a gallery of street art by "Kings and better."

This taxidermic smorgasbord was co-created by an artist poached from the Museum of Natural History.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

This museum collects over a century of automobile history including the iconic car from The Muppet Movie.

This stunning Brazilian library contains the largest collection of Portuguese texts outside of Portugal itself.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

This real life asylum of horrors is now an abandoned ruin that hides the unbreakable code to one patient's insanity.

This Costa Rican topiary park is a surreal garden of unearthly delights.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

The ruins of this Brazilian island prison still bear the scars of the bloody rebellion that closed it down.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.