What happened to the three lighthouse keepers who vanished from this place remains a mystery over a century later.

A fascinating collection of art made from petrified wood and fossils by two octogenarian twin brothers.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

This romantic, decaying 13th-century ruin on the edge of Sherwood Forest is reputedly one of England's most haunted places.

Bacteria and algae give the salty water its bubblegum hue.

A museum dedicated to the history of psychiatric treatment featuring a gallery of art made by patients.

Inside a humble hangar is some of the best roller derby the world has to offer.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

A Tucson museum and performance space full of found-object movable sculptures.

The oldest bibliophilia club in America, with exhibitions on historic books and graphic arts.

Mysterious 500-year-old tapestries depict a unicorn hunt.

A crumbling hospital from the 1850s on Roosevelt Island.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

A terrific purveyor of natural history objects and curios.

This former Masonic hall has been turned into an art project that uses even more metaphysical iconography.

A historic neighborhood church is reborn as a psychedelic arts collective.

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The original toys that inspired the beloved children's stories are on display at the New York Public Library.

This hidden library of physiological ephemera contains centuries worth of knowledge on the vim and viscera of the human body.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

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