Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

This massive boulder is either a unique rock formation created by glacial melt or a magic energy vortex.

This disastrous New Jersey safari park saw animal attacks, escapes, and disease before being abandoned.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

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

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

The birthplace of Appalachia's only first lady, who some have dubbed the United States' "first female president."

The FBI's urban training course may have the highest fake crime rate in the world.

The taxidermy remains of the most popular pony in children's literature.

The highest point in Virginia can only be reached by passing through ponies and flowers.

Collecting 700 years of mechanical death-dealing, the NRA's sprawling gun museum is a revealing testament to the American obsession with armament.

Lines from a walking song are etched into a rock in Natural Bridge State Park.

An alternate history park where the Union Army loses the war... to dinosaurs.

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

A recreated sign from the movie Jumanji has become a makeshift tribute to the film's late star.

A popular 19th-century natural landmark is now hidden within a sprawling forest.

A strange, heartwarming, decades-old declaration of love on a New Hampshire roadside.

One New Hampshire alleyway has become home to a public gallery of feline art.

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.