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

This weeping, 10-foot-tall sculpture was a maquette for a 9/11 memorial.

Yo, Adrian!

This 25-foot-tall gorilla made his way from the Wildwood boardwalk to a Pine Barrens gas station and deli.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.

This classic steam-powered train takes tourists on a nostalgic trip around the Connecticut River Valley.

Ruins of a historic medical facility sits eerily by the water.

The world's largest indoor go-kart racetrack is hiding in Connecticut.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

A free display of artistic lifesize dinosaur sculptures in a backyard garden.

A completely round house designed for the Atomic Age.

The graphite created here was used in the manufacturing of pencils.

A mysterious echo seems to defy the laws of acoustics.

A cable-suspension footbridge that hangs high above the Mill River.

A beautiful, creepy 19th-century castle stands incongruous in rural Vermont.

This charming woodland trail is peppered with poetry.

An ancient glacial pothole waterfall in the heart of the Green Mountains.

This sandstone gorge in New York State's Adirondack Mountains is home to waterfalls, flumes, and more.

A perfect replica of the beloved show's first set.

Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

A pair of black granite tails dive into a sea of grass in landlocked Vermont.