The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

A tribute to Ponce de Leon's supposed quest for eternal youth.

The site of the little-known Pennsylvania battle that sparked the Seven Years' War.

A portion of the old Pirates stadium over which a defining home run once flew still stands even after the rest of the stadium was torn down.

Memorializing an American tragedy of massive proportions.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

This dramatic rail curve was once the target of a failed Nazi attack.

Despite being stolen multiple times, this civic electrician's street corner Snoopy won't be stopped.

Steepest flood safety railway in the entire world.

Behold the rickety wooden glory of the world's oldest operating roller coaster.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.