Huge masonic hall in Philadelphia with lavishly themed rooms.

Century-old shop, specializing in Occult products.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Where the lovelorn find a home for their sentimental keepsakes.

"World's largest scrap metal sculpture" stands in an outdoor sculpture garden in the middle of Wisconsin.

A house filled to the brim with oddities and curiosities.

Australia's largest medical museum featuring a 19th-century pharmacy.

Occult books, tarot, oddities.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

The intriguing personal collection of a professional demon-chaser.

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

A vast collection of rare books, manuscripts & extraordinary objects illustrating the history of medicine.

Yale University's home for rare works, including the mysterious Voynich Manuscript.

The world's first time capsule lies behind a welded steel door in Atlanta.

David Sedaris called it "The greatest shop in the world."

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Continuing the tradition of the dime museum in style.

One part antique store, one part curiosities hodge-podge.