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

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

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

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

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

A beautiful Victorian-era cemetery, complete with a miniature village.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

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

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

A wedding chapel, vintage clothing shop, and bar all under one roof.

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

The secret city built by the Manhattan Project.

This former maximum-security prison is creepy, sobering, and supposedly haunted.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

This limestone outcropping was once a ceremonial site for ancient Native Americans.

Colloquially known as "the lynching memorial," this is the United States' first memorial to the victims of racial terror at home.

A unique book shop with a collection of rare tomes and a nostalgia museum.

An autonomous oak in Alabama.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

According to local lore, this narrow passageway through two large rocks was accidentally created by the devil himself.

This chicken coop pays homage to a classic architectural style made famous throughout the southern United States.

This mansion turned restaurant was once a pitstop for Al Capone during his travels.

One man has spent decades faithfully constructing this unique brick and cinderblock castle.