These beautiful garden buildings are among the oldest surviving greenhouses in the United States.

This castle constructed in 1928 was crafted from drawings of Lismore Castle in Ireland.

A steampunk wonderland that preserves America's history of industrial innovation.

Once the largest public hospital for the mentally ill was also surrounded by controversy.

A memorial dedicated to victims of the Irish Potato Famine who perished while quarantined on this island.

The site of the tragic isolation of Nipmuc Native Americans left to perish in King Philip's War.

The oldest continuously inhabited private home in the United States.

This Victorian home turned opera house may have a phantom of its own.

The macabre graffiti spectacle in a quarry in a Massachusetts forest reservation.

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

This Gothic castle was inspired by Erik the Red's Viking residence at Brattahlid in Greenland.

Ornate and macabre headstone in one of the country's oldest cemeteries.

At the supposed instruction of Ben Franklin and Socrates, a Spiritualist believer intended to birth a mechanical messiah here.

The headquarters in Salem doubles as an occult art gallery.

A dollhouse full of taxidermy rodents, each one handcrafted and given a sordid past.

Rumored to have tormented a family in the late 1960s, this toy now resides in a quiet little oddities shop.

Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.

This candy-colored storybook village originated as a 19th-century Methodist campground.

The oldest platform carousel built in the United States continues to delight children in Martha’s Vineyard.

Martha's Vineyard's most beloved speakeasy sells late-night pastries.

In an alcove of this historic library, you can find murals painted in the 1930s by an artist who went on to create some of Disney's most iconic animated films.

This black cat was actually designed to ward off bad luck.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

Deep into the lower floors of Pike Place, find a date with fowl fate.