The fountain marks the area where hundreds of accused witches were burned at the stake.

The final resting place of soldiers' loyal canine companions.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A book bound in the skin of an infamous criminal, along with countless other specimens.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

This series of Scottish caves has no clear purpose other than baffling historians.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

Oldest building in California still in use.

One of the best absinthe distilleries in the United States.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

This lesser known Hearst estate is a fairytale village built from the stolen bones of historic European buildings.

Haunting and beautiful trees, doomed to die.

A temple devoted to inner esoteric mysteries located in a California commercial strip.

The miraculous hydrant that saved the Mission District in 1906.

The cobbled together compound of a deceased artist which now serves as a filming location.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

A hidden world of exotic succulents and cacti.

Lemon Grove, California is known for its giant lemon...and mummified bodies.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

A giant donut stands as a popular symbol of Los Angeles iconography.

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.