The ruins of a once prosperous power station have become a mouldering seaside gem.

An abandoned cyanide mill is now a haunting magnet for graffiti and illegal parties.

A man-made island fort that has housed soldiers, scientists, and ravers.

Once America's longest-manned military fort, now an abandoned hulk.

House of vintage taxidermy and Steampunk sculptures in a quiet Pittsburgh neighborhood.

These disused steel furnaces are now haunting ruins that may one day be a national park.

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

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

These mystical miniature houses bring a touch of magic to the New Jersey woods.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

Once a place of peaceful repose, this sanitarium now faces an uncertain future.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

A formerly abandoned mental institute, now back in business.

Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

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

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

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

One of the world's largest automobile junkyards is a unique landscape of metal and moss.

A moody and picturesque riverside ruin overgrown with vegetation.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

This rusting remnant of the local herring industry is being given a second life.

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