Unlike other abandoned asylums this empty institution welcomes visitors, just don't go in the buildings.

One of the most scenic falls in Massachusetts has a history of death and grim legend.

Three prestigious academic collections come together to create a world-class natural history museum.

One of the now-less-hidden floral gems of the "Emerald Necklace."

The thousands of shades on display — some toxic, others impossibly rare — are a library of more than just color.

Memorial of the Salem witchcraft hysteria in the town of Danvers, where it all began.

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.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

A collection of full-size movie monsters opened to the public.

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

Museum dedicated to awful artwork.

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

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

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

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

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

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

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

One of the largest open-pit copper mining operations in the entire country.

A stealthy Apache hideaway that became the haunting site of a mass grave.

Remnants of a storybook amusement park hidden behind a strip mall.

The Decoy Capital of the World.

Maryland's first (and last standing) toll house on America's first federal road established the state as the "Gateway to the West."