Public works and national defense project meant to carve a canal all the way across the state of Florida.

The mounds on this coastal archaeological site reveal the history of the land’s first inhabitants.

Ruins of an old sugar mill sitting quietly next to a park in rural Florida.

Where serial killer Aileen Wuornos drank her last beer.

The land is home to swimming ponies and a legendary 18th-century treasure.

The solitary grave of a schooner captain killed by lightning while serving biscuits.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

This historic boathouse was constructed using salvaged lumber from burned barns.

Garments from across the globe call this hidden gem home.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

This nine-story building is the oldest standing skyscraper in D.C.

A jukebox headstone marks the grave of the Cleveland disc jockey credited with coining the term “rock 'n' roll."

The headquarters in Salem doubles as an occult art gallery.

The narrowest house in America is seven feet of pure spite.

All that remains of one of the Civil War's more deadly POW camps is a simple flagstone.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

The little-known final resting place of one of America's greatest writers.

This grand Spanish-Cuban restaurant has been serving customers for more than a century.

Time travel with sweets across history at this research-based candy store.

This advertisement for talcum powder was painted on the rock face and has since defied removal.

The fastest transatlantic ocean liner sat abandoned in a Philadelphia shipyard for decades.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This elaborate towering structure was once famed for its revolutionary height.

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