Once the largest public hospital for the mentally ill was also surrounded by controversy.

All that remains of the Whittall mansion are the ruins of the formal garden and its pergola, dedicated to the late Matthew J. Whittall by his widow.

Civil War-era Fort designed to withstand invasion and attack, with tricky traps called "murder holes."

A lone tower rises above the cliffs in a city park, offering fantastic views of the Connecticut landscape.

This historic railway museum may have lost its passengers but not its love for trains.

Ruins of a historic medical facility sits eerily by the water.

The ruins of an abandoned 18th-century town that is slowly being reclaimed by the forest.

An abandoned gun-funded 19th century utopia.

An abandoned Depression-era zoo hidden just off the highway.

The world's largest indoor go-kart racetrack is hiding in Connecticut.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

A few stone foundations and an old graveyard are all that is left of this once thriving settlement in the wilds of Connecticut.

This abandoned psychiatric hospital once housed more than 4,000 patients in the middle of a quaint New England town.

A former copper mine which became a truly unsuccessful prison.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

Underground tunnels remain beneath this abandoned mental asylum.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

As state high-points-by-elevation go this spot is one of the lowest, but for years it was also the hardest to climb.

Abandoned Coast Artillery fort now serves as graffiti canvas and sightseeing vantage point.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

A virtually untouched "home on the hill" for the flora and fauna of Rhode Island.

A crumbling stone stable and carriage house are all that remain of a manse that was once filled with Egyptian artifacts.

This fairy tale-themed amusement park is now abandoned, and childhood metaphors abound.