From economic backbone of a community to deadly diving hole, these former stone quarries are now a park for rock climbers and graffiti artists.

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

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

This small-town pizzeria won the Hollywood lottery.

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

New Hampshire's most beloved war hero lived out his retirement in this peaceful homestead.

The only one of New Hampshire's original 14 World War II watchtowers to survive in near-original condition.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

America's oldest archaeological site or a muddled case of wishful thinking.

On top of Gibbet Hill lie the ruins of a lavish turn-of-the-century estate that never quite came to be.

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

This stone tower in a small town's graveyard looks as though it would be more at home in a fairy tale.

This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

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

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

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

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

This mysterious artificial cave has long puzzled New Englanders.

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

A spooky and decrepit mental health facility is slowly being replaced with newer digs.

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

A wunderkammer hidden on the top floor of the Hartford statehouse.

An iconic steel and chrome diner from the 1940s left empty for nearly 20 years is in danger of being demolished.