A mysterious artist-run cabinet of curiosities and library.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

The British monarchy's stamp collection is one of the most impressive in all of Europe revealing generations of royal nerdery.

"Alleys of Stone" form natural mazes in Spanish natural park.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

This star-shaped military outpost is now simply trying to protect itself from neglect.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An outsider folly near Madrid.

A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

An eccentric inventor's castle home with its own indoor weather system.

A defunct all-girls college which may be the resting place of H.P. Lovecraft's real-life Necronomicon.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

A Medieval Water Tower in the Heart of Massachusetts.

Annual celebration commemorating the 1965 sighting of strange lights in the town.

Underground tunnels remain beneath this abandoned mental asylum.

An old dining hall now serves up ghost stories for lusty locals.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

The library of every book lover's dreams.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

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

Former abode of notable poet, complete with literary references and stories of ghosts.