World's largest collection of serial killer artwork and other macabre exhibits.

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

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

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

A theme park attraction designed to turn your children into LARPers.

This massive blockhead sculpture hides an entire library.

Tour the luxe "glass cage" that inspired and unnerved the architecture world upon its debut.

This imposing modern citadel started out as a home renovation project.

A bizarre house filled with an astounding array of collections.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A layered tribute to the work of mosaicist Isaiah Zagar.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

Where America's first doomsday cult awaited the end of the world.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

Outsider art meets paleontology at this roadside reptile repository.

This free, take-a-book shop seems like a trick but isn't.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

A museum dedicated to exhibiting remarkable outsider art.

The trials and tribulations of marking Poe's grave.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

The site of the climactic scene from the classic horror film is now a historic landmark.