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

Floating man-made island and upscale restaurant.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

Only hotel where you can legally launder money.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The remains of a ruined mansion memorialize the 1906 earthquake.

This shop specializes in oddities and Victorian-inspired wonders.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A 140-year-old castle with underground caves hidden in San Francisco.

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

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

This surreptitious shop is only open five hours per week.

A huge musical instrument played by the ocean.

This old-fashioned candy shop, ice cream parlor, and diner served as the setting for one of TV's most controversial series finales.

Hidden deep within New Jersey Pine Barrens is a massive graffiti wonderland.

A world-class collection of mechanical musical instruments and automata.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The first American axe throwing club.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

Current docking place of the SS United States, the fastest transatlantic ocean liner.