Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

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

A park full of outsider art, created by college students studying outsider art.

Not even a series of devastating fires could keep this odd castle in upstate New York from bouncing back.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

A toxic ghost town sitting atop a massive coal fire.

The graffitied ruins stand hidden within the Pennsylvania woods.

Priceless space junk on display in front of a local Dairy Queen.

A rock maze opens up to a panoramic viewpoint at an abandoned mine full of ghost stories.

Locals call this magical moss-covered walkway the "Emerald Path."

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

An abandoned asylum where patients have been forgotten but their possessions remain.

A deteriorating 1990s Girl Scout camp in a beautiful lush park on Lake Ontario.

Eclectic architecture in the woods of New York.

An old dining hall now serves up ghost stories for lusty locals.

An unassuming nature trail winds through dozens of tiny houses built for the wee people.

A room hidden behind a swinging shelf in the children's section.

One of the largest festivals of flowers in North America takes place, appropriately, in the Flower City.

The Victorian-era greenhouse is stuffed with tropical plants, and open 365 days a year.

Secret Swing.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

Buffalo's abandoned concrete grain elevators are getting a second life.

A forsaken wonder in the middle of the East Side neighborhood.