This grave marks the passing of a historic Jane Doe whose identity remains a mystery to this day.

This historic steamboat is scuttled just a few hundred feet from where it was built over a hundred years ago.

A simple plaque remembers a California island massacre that claimed more than 100 lives.

This charmingly homemade amusement park has been growing for 40 years.

This elaborate towering structure was once famed for its revolutionary height.

Yo, Adrian!

This statue of the "father of television" stands prominently in the United States Capitol.

Look closely and you’ll notice that the color changes a third of the way up the tower.

While most wind tunnels test scale models, the "Cave of Winds" was large enough for actual airplanes.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

What was once the second largest steel mill in the US is now a sprawling complex of modern ruins.

A historic and oft-filmed prison stands in a Chicago suburb.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.

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

The headquarters of one of the world’s longest-running humor magazines bears a noticeable resemblance to a head wearing a Prussian helmet.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

The last living thing to come out of the rubble after 9/11 is now a symbol of hope and resilience.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.