A formerly abandoned mental institute, now back in business.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

The giant birds honor two native North American species.

Abandoned since the 1950s, the streetcar lane beneath the heavily trafficked bridge lays empty and unused.

One of the oldest Mexican restaurants in the United States air-dries its trademark beef in a dangling outdoor cage.

An Arizona museum with a collection of pharmaceutical oddities, including a jar of a gangster's chewed gum.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

This pseudo-steampunk weapons facility is the world's largest wood and glue structure, and packs quite a wallop.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

A tiny wilderness cemetery commemorates the deadliest episode of the Klondike Gold Rush.

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

A cave dug by a man directed by ghosts to find pirate treasure.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

This railroad tunnel was once the longest in Massachusetts.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

This popular Boston haunt is reminiscent of a time gone by, when slow cafes and sweet-smelling smoke wafting from patios was the norm.

This headstone-like marker inscribed with three words has been an utter mystery for over a century.

Ornate and macabre headstone in one of the country's oldest cemeteries.

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

Ice cream stand, snack bar, and time capsule of milk conveyance.

The site of Paul Revere's historic two lantern warning.

A historic bridge with a lovely acoustic anomaly.