A millionaire's abandoned swimming pool from the gilded age of one of America's most distinguished families.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Order scoops of pandan, lychee, and black sesame at this family-run institution.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A crumbling hospital from the 1850s on Roosevelt Island.

A terrific purveyor of natural history objects and curios.

A miniature village lies nearly forgotten in the forest by the side of a major highway.

This picturesque Victorian ghost town was once a thriving mill community.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

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

This old cement mine has been used as everything from a mushroom farm to a recording studio.

An abandoned asylum once on the cutting edge of lobotomies may be reborn as a Christian college.

A historic recreation of the golden age of the Erie Canal, abandoned for some time, slowly being restored.

The abandoned ruins of America's first private zoo are open for exploration in the Catskills.

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

This small, hidden cove is home to abandoned boats.

The quarry was abandoned over 100 years ago, after a massive ammunition explosion ended in tragedy.

A 19th century hat factory still stands as a crumbling ruin in upstate New York.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

The intriguing personal collection of a professional demon-chaser.

An abandoned 146-acre summer resort slowly being reclaimed by nature.

Forgotten under the construction of a new urban roadway is a small, abandoned part of town.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.