The site of a popular piano lounge owned by a former world champion boxer is now a place to rent a truck.

A condo complex once housed a boarding school with the 24th U.S. Vice President among its notable alumni.

Once forgotten, this strip of sand was a rare beachside haven for Black Americans in Atlantic City.

The world’s first penitentiary, meant to be humane, drove men insane.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

These medicine cabinet staples are part of the museum's collection of everyday objects.

The residents of this ominous-sounding street in Pennsylvania liked its name so much they fought to keep it.

A historic Montreal market that was the city's agricultural hub for over century.

A real flying saucer, contracted by the U.S. Air Force.

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

A diorama of the Civil War, fought by cats.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

The final resting place of two members of the infamous Doan gang, notorious outlaws and Revolutionary War Loyalists.

This strange, big-tailed beast became a Pennsylvania town's unofficial mascot.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

This jail which was in service for over a century is now open for curious visitors.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

A stone pillar marking the location of the westernmost battle of the American Civil War only honors one side of the conflict.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A mysterious "wedding cake" castle in the middle of the urban desert.

A geological mystery on Camelback Mountain.

This abandoned horse racing track was an exercise in hubris from its inception.