Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

This extremely narrow tenement boasts a maximum occupancy of just two.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

This sanguine boulevard was named after a deadly cowboy bar fight.

A charming Spanish village sits atop this natural limestone overpass.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

A hidden tunnel leads to a medieval queen's shrine buried beneath a parking lot.

The romantic botanic tunnel feels like a well-kept secret.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

The abandoned ruins of a beautiful medieval castle just outside Barcelona.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

Authentic gondola hanging from the ceiling, notable mural in the back room.

An increasingly eccentric apartment building, topped with winged beasties.

Rainbow-hued local gem in Venice.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

A prohibition-style speakeasy takes up residence in the last Victorian residence in Hollywood.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

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

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

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

A sculpture of a salmon swimming through a brick building.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

The seamy, underground secrets of Portland's criminal past.

An emporium for the weird, creepy, rare, and just plain gross.