University of New Hampshire holds the documentation and artifacts of local alien abductees.

The ghost town that was one of New Hampshire's first settlements now exists as a park detailing its history.

A very big rock just plopped down in the New England woods.

Around 100 sculptures from artists all over the world decorate the hiking trails surrounding this locale.

Dedicated to "the father of U.S. life insurance."

A historic bridge no one is allowed to cross.

Second largest wastewater treatment plant in the country.

This abandoned neighborhood is now a park filled with beautiful trees, wildflowers, and hints of its past.

The sprawling, eccentric estate of Ames and Ames, a brilliant botanist, and a genius inventor and artist.

The pleasant woodland cemetery that has inspired more than its fair share of wild legends.

A coastal rock outcrop with mysterious inscriptions variously attributed to Native Americans, Portuguese, Phoenicians, Norse, and more.

A stunning garden filled with fantastical environmental folk art and sculptures.

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

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

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

Locals purchased this abandoned quarry in order to make sure it continues to be overgrown.

Eclectic collections, artwork, and some feline friends fill the writer's former home.

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

This miniature feudal castle was built on a whim to honor a US Navy pioneer.

Naturally formed white marble arch housed in an abandoned marble quarry from the 1800s.

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

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

Friction between grains of sand cause a curious "singing" sound.

The Boston square dedicated to the dark poet who was born nearby.