This freshwater spring fills with 10,000 gallons of water per minute.

A medieval castle in the middle of rural Texas.

This sprawling bookstore spans four floors and has more than a million books in stock.

The only Florida state park with publicly accessible caves.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

An unreal vintage shop that wears its dadaist influence on its zombie fish.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Faces carved into the cliffs create an otherworldly walking trail.

This cave holds a surprisingly colorful variety of geological oddities.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

Bizarre Cavern.

Series of storm drains connected to a dark urban legend.

Shoreline strewn with the remains of ghostly fallen trees.

These molds for fiberglass statues have formed an eerie, accidental sculpture park.

Slyly buy a shake in the Parker Meridien lobby.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

Where monkeys run wild and the humans are caged.

An oddities shop packed with twisted treasures inspired by Oscar Wilde and Edgar Allan Poe.

A spiritual vortex among the red rocks in Sedona.

An ice cream parlor chain that caters to vegans and pinball fans equally.