One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

An abandoned 1920s school with a mysterious history.

Berkeley Hot Springs presents to you "the only outdoor monument to presidential bathing."

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

The U.S. Army's giant warehouse of war art includes Hitler’s watercolors and Norman Rockwell oil paintings.

This simple stone memorial remembers a secret, Geneva Convention-defying interrogation base from WWII.

The last of Philadelphia's wood-paved streets is now a landmark of terrible engineering.

The humble field where the first Major League Baseball game was played.

The oldest surviving botanic garden in the United States.

The historic home still shows the scars from a little run-in with the British in 1813.

This collection of odd proofs of concept is like taking a walk through the imagination of a Victorian engineer.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

Museum houses an impressive display of the origin and artistry from the now-quaint invention's history.

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.