A former copper mine which became a truly unsuccessful prison.

An abandoned Victorian-era mill in the middle of modern Manchester.

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

This historic park site contains the last remnants of a once bustling canal system.

A castle inspired by medieval architecture is hidden in the woods of Connecticut.

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

A careful eye can find hundreds of dinosaur tracks running along the Connecticut River.

This petite park lets visitors see and touch examples of fossilized dinosaur tracks.

The walkable ruins of an 19th century hotel, destroyed in a horse cremation gone wrong.

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

This abandoned factory on the Hudson River once churned out a million bricks a week.

Home to the abandoned Tioronda Hat Works Factory, this park is a combination of woodlands and marshlands.

Inside a state forest, the forgotten remains of a Cold War defensive installation.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

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

This sprawling 18th-century cemetery features unique and beautiful gravestones, including one shaped like a tree.

The railroad tunnel nicknamed the "Bloody Pit" for taking the lives of hundreds during its construction.

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

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

Amazing views of Long Island Sound can be seen from this mountaintop tower.

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

This small-town Connecticut restaurant gives each diner a free book from its vast library.

A once-booming railroad left abandoned next to the Quinnipiac River marshes now intersects with a hiking trail.