A historic bridge with a lovely acoustic anomaly.

Overgrown ruins of a turn of the century island fort that sees very few visitors.

These World War I shooting range tunnels are now haunted halls of underground graffiti accessed through the roots of a tree.

The ruins of a Massachusetts prison farm can still be found crumbling the woods of a state park.

This evocatively named natural crevasse was created by a torrent of water that smashed right through a granite deposit.

An enormous, inside-out glass globe built in 1935.

The often-overlooked ruins of one of the first buildings designed by famous landscape architect Frederick Olmsted.

The former locus of Boston's high culture has been shuttered and buried for over 70 years.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

The oldest Italian café in Boston, this spot also serves as a veritable museum of vintage coffee ephemera.

Two thousand artifacts from around the world collected by one woman who loved to travel.

A cave dug by a man directed by ghosts to find pirate treasure.