An avant garde art museum at the University of Chicago.

An encyclopedic collection of mammal penises.

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

Museum preserving torture methods from the past.

Home to three historic ships from the age of Vikings.

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

These pretty kitties killed and ate as many as 135 railway workers.

Go inside to really appreciate this 500-year-old technological masterpiece.

At Chicago's revered Field Museum, visitors are invited to learn about and literally explore DNA.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

This historic patch of real estate offers a glimpse of colonial Boston.

"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."

Trash escaped from a landfill to fill beaches with all kinds of treasure.

In 1958, an MIT fraternity pledge laid down on this bridge and instituted a new, unique unit of measurement.

In the 19th century, this was the center of Boston's Black community.

A plaque marking the famous abolitionist's birthplace often overlooked by visitors to the nearby Charles Sumner House.

Silverware in the sidewalk outside a grocery store cements this neighborhood’s Italian culinary history.

A Harvard-area eatery preserves the uncovered tiles of its century-old predecessor.

The statue of John Harvard isn't actually John Harvard—or even, technically, the founder of the school.

One of the last remaining movie theatres in the country that features a rear-projection system.

The last remaining 19th-century tenement from Boston's old West End neighborhood.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

Millions of numbers carved in glass represent the tattoos forced upon victims.