The headquarters in Salem doubles as an occult art gallery.

One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

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

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

This abandoned villa of makeshift buildings was once the home of dancer Elis Sinistö.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Last residence of H.P. Lovecraft featured in his story "The Haunter of the Dark."

Final resting place of one of the classic authors of horror literature.

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

Concrete crosses scattered across the Arizona scrubland which were used to align spy satellites.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

Explore the dark underground corridors of this graffiti-covered former military fortification.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

Captured in 1968, the Cold War spy ship is the only U.S. Navy vessel being held by a foreign government.

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

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

This decrepit abandoned building is made all the more eerie by its dark history.

This is the house that spite built.

Run by a eugenics advocate, this aging institution conducted secret radiation experiments sponsored by Quaker Oats.

A historic bridge with a lovely acoustic anomaly.