Civil War dumping ground for the bodies of terrorized Union sympathizers.

Settled in 1696, abandoned after the Revolutionary War.

The world's largest fire hydrant is supposedly tornado-proof.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

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

St. Augustine's record-setting narrow street was designed to protect against pirates.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

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

These ruins are all that remain of what a Spanish barrack that likely housed a quarry overseer, masons, and stone cutters involved in the construction of the Castillo de San Marco.

The graves in Florida's oldest Black cemeteries are marked with shells, stones, and mementos of the deceased.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”

Gutted airplanes slowly decay in a Florida field.

A sprawling maze of used books piled from floor to ceiling.

Jacksonville's highways rendered this century-old grammar school unusable.

This ancient octopus-like tree was saved from destruction thanks to shady reporting.

This former water source for the City of Brooklyn is now a thriving natural wetland.

The final resting place of the great escape artist, where some still gather to wait for his escape from death.

A fire station-turned-church-turned-museum dedicated to the work of seminal light artist Dan Flavin.

This 19th-century Hamptons windmill was once home to modernist painter Agnes Pelton.

A mysterious air force base built to resemble a Long Island fishing village.

This exemplar of modernist architecture is meant to captivate and inspire students of the Cooper Union.