A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

Captain John Smith thought these cliffs were amazing in 1608 but sharks thought so 20 million years before him.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

The land is home to swimming ponies and a legendary 18th-century treasure.

An overlooked memorial honoring the local Washington residents who died in World War I.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

The national park was once a plantation estate.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Washington's iconic carousel has a nice piece of Civil Rights history.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

Yo, Adrian!

Eclectic architecture in the woods of New York.

This Fifth Avenue church has long been the favored worshiping place of Broadway actors and vaudeville performers.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

A castle built for love, and abandoned due to heartbreak.

An antique cemetery in New York, this land is home to any number of famed corpses.

The remains of a failed subway in upstate New York is now an underground graffiti bunker.

The gravestone of the suffragist leader attracted extra visitors during the 2016 election.

"Call for the doctor, call for the nurse... Vote!! said the lady with the alligator purse."

One of the largest festivals of flowers in North America takes place, appropriately, in the Flower City.

Rochester's signature culinary delicacy.