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

This tiny museum kept in a B&B laundry room holds the death mask of notorious bank robber Pretty Boy Floyd.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

This eccentric mansion museum holds a impressive collection of rare and automatic instruments.

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

This Old Testament garden features 100 plants from biblical times.

The first of Lancaster's "rural cemeteries."

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

A local prank turned town icon.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

This elaborate towering structure was once famed for its revolutionary height.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

This little-known Revolutionary War fort is supposedly haunted by the ghosts of its past.

An Irish Memorial commemorating those who perished due to potato blight.

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

A diorama of the Civil War, fought by cats.

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

This recreation of a 19th-century dime museum is full of oddities.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

Penn State's giant bug collection.