Fiji mermaids, mummified remains, and recreated cryptids are among the morbid oddities at this Maryland museum.

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

A table rock formation that has been intriguing West Virginians for years.

A local farm's collection of unusual structures from a now defunct storybook amusement park.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

The highest point in Virginia can only be reached by passing through ponies and flowers.

Bizarre Cavern.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

A historic coal mine that doubles as a museum and tourist attraction.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

The highest point in Maryland is only accessible by hiking through another state.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

Outsider art meets paleontology at this roadside reptile repository.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

Art museum based around the collections accumulated over 58 years by one eccentric thrift store owner.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

America's post-nuclear-attack chambers of Congress.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.