Mariners once used this prehistoric landfill as a navigational landmark.

Made famous by 'Star Wars,' these troglodyte homes face an uncertain future.

A secret fresh water spring for animals and humans alike hidden along the most famous road in the United States.

A painfully obvious spy house sits right across the street from the Russian Embassy.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Known as the most resilient water tower in the region.

Every winter, this tiny islet on Florida’s Gulf Coast is swarmed by some of the largest birds on the continent.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This unauthorized stone mermaid was secretly carved out of public stone before being permanently preserved.

A hidden slot canyon in the southern Nevada desert makes an unexpected oasis and scenic hike.

One of the oldest lighthouses in the world has been in continuous use since it was first built in 1531.

A short tunnel built straight through a magmatic dike.

How did the front of a supersonic jet make its way to a display case in a Kansas City yard?

With nickel-steel armor and three-inch thick bullet resistant windows, FDR's train was a rolling fortress.

Found: Garden of Eden in Miami-Dade County, Florida.

The world's largest model of our planetary system.

Step into the past and experience what life was once like in the Sunshine State.

This general store is stocked with memorabilia from the 1930s onward—almost none of it for sale.

A community of collapsing homes more than a mile out from the Florida coast.

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

The largest retailer of seashells in the world.

Some believe Ponce de León's mystical spring lurks right under a public drinking fountain.

This outdoor mural is one stop on a walking trail that weaves art and history together to tell a tale of local history.

These crumbling foundations are all that remain of the once-stately 1840s manor that gave the town of Bradenton its name.