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

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

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

These former theme park figures have a new lease on life outside a water plant-turned-restaurant.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

A circus legend leaves an unexpected endowment.

Visitors are welcome to enter this lush Key West sanctuary to entertain its plethora of rescued parrots.

This kitsch eatery is chock-a-block with bric-a-brac.

This small cemetery contains the graves of prisoners of war who were interred at Fort McClellan during World War II.

This papier-mâché diorama celebrates an unusual landmark: the brightly-colored runoff from a local sock factory.

The metal spire on the roof of this tower was intended as an airship docking station, but it was never actually used.

In 1911 this intersection was called "the heaviest corner in the South," an outlandish claim that only grew wilder over the years.

This 880-acre facility is home to a massive collection of vintage motorcycles and cars, as well as a 2.38-mile race course.

Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

A strange history museum, with items accumulated by a pair of globe trotting spies.

Once one of the largest producers of pig iron in the world.

Every last book in this bookstore is signed by the author.

The former home of the hard partying literary power couple is now one of the only museums devoted to their story.

HFH's slum simulation is either a noble recreation of poverty or a cringeworthy attempt at same.

This museum honors one of Cedartown's favorite sons.

The first integrated firehouse in Atlanta houses a museum on the history of desegregation in the city's fire department.

The ruins of an open-air theater built on this Georgia island in the 1970s.

A historic gristmill that still produces flour and grits the old-fashioned way.

Tombstone of a dog that greeted passengers at the Southern Railway Depot.