This tower was once used to create ammunition for early settlers.

The childhood home of the famous general's mother is now a small, walled garden.

This Federal-style plantation house was once visited by Abraham Lincoln to meet with generals during the Civil War.

Originally dubbed "Retirement" by the Navy Commodore who built it in 1780, this beautiful mansion is now the centerpiece of a suburban community park.

This "castle" is actually a limestone and quartz formation hidden along a trail.

The romance of early commercial flight still fills this Art Deco destination.

Where pardoned turkeys once spent their all-too-brief final days.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

This museum explores the grim reality of life in the earliest British colonies in America.

This labyrinthine resting place of Black American leaders has been reclaimed by nature.

Former wax museum from the 1960s, home to many wax U.S. Presidents and the famous White House miniature.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

A haunted hill that supposedly defied gravity.

Former utopian colony based on the belief that the universe exists in a hollow sphere.

A Circus legend leaves an unexpected endowment.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

A failed, un-built suburb that has been going feral for decades.

"We Seceded Where Others Failed."

The short-lived history of a new republic and British control in West Florida.

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

World's largest magnetic research facility.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

Manatees congregate around a power plant's discharge canal where the water is especially warm.

Former villa and estate of James Deering developed to preserve native tropical forests.