The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

A bit of retro transportation flair preserved in the world's largest department store.

The collection of 80+ pieces created between the years 1100 and 1500 is intended to be seen, heard, smelled, touched, and tasted.

A nourishing complex of found object art, paintings, and sculptures that celebrate key figures in Black history.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

This North Carolina museum is keeping the pinball craze alive, with a little Space Invaders on the side.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

True to his word, George Swanson is buried in his white 1984 Corvette.

The largest clock face in the United States is twice the size of Big Ben and infinitely more ad-sponsored.

Memorializing an American tragedy of massive proportions.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

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.

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

Steepest flood safety railway in the entire world.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

These disused steel furnaces are now haunting ruins that may one day be a national park.