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

Once the largest gravity dam in the world.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

Unlike most arches, this geological oddity formed in a volcanic dike.

A fake mine that was made using real mining techniques which is also used as a community center.

This once-popular otherworldly landscape was formed by one of the largest volcanic eruptions in history.

It was an experiment to prove that glacial boulders and rocks can be used in constructions and dwelling.

The remains of a magnificent medieval fortress that was the capital of a vast empire.

A small obelisk marks the spot where Captain Sam Greele was killed by a falling tree.

The massive Roman arch in New Hampshire that was meant to be a tomb.

The gravestones in this historic cemetery are carved with mysterious faces.

This small-town library was the first in the world to be entirely supported by taxation.

The strange, ritualistic-seeming 100+ year old basement of a New Hampshire undergrad society.

This small stone chapel is a hidden gem just outside the University of New Hampshire campus.

Rock face that shares a name with Mary Shelley's famous doctor.

Restaurant in a 1741 farmhouse that touts the story of its haunting on its menus.

This historic mini-suspension bridge was swept away once but is now here to stay.

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

A former zoo turned public park, where visitors can hang out in the old animal cages.

Stumps of an Ice Age forest, visible only at low tide.

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

The New England cabin where an infamous British occultist conducted experiments in "magick".

Birthplace of America's first documented serial killer.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.