Rich red almandine gemstones are waiting inside the volcanic rock strewn across this eastern Nevada hillside.

This peculiar lake of pitch is so thick and viscous that one can walk on its surface.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The history of the treatment of mental illness, illustrated in all its gory detail, and housed in an asylum.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

World's largest collection of serial killer artwork and other macabre exhibits.

A plaque memorializes the Boston location of one of the largest nightclub fires in history.

Tragedy on Little Brewster Island memorialized.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

This landmark cemetery in Boston was created more than 300 years ago.

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

Beautiful steampunk ghosts of early Massachusetts.

Site of a famous 19th-century transcendentalist utopian community, now abandoned.

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

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

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

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

This headstone marks the grave of an 11-year-old boy killed during clashes in the streets over the boycotting of British goods.

No one messes with the Massachusetts sacred cod, not this time...

19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

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

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

World's first "penitentiary," meant to be humane, drove men insane.