A replica of one of the more than 15,000 civilian lookout towers that lined the U.S. coast during World War II.

Waterfalls, rapids, and top-notch swimming spots await in this densely forested corner of the Smokies.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

Once the home of a noted Civil War spy, the two-story brick house now serves as a museum.

This statue in Talcott, West Virginia, is an enduring symbol of American grit.

The tallest waterfall in West Virginia.

The remains of one of the last mining camps developed on the New River.

One of the oldest, tallest, and most haunted lighthouses in America.

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

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

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

Hidden in the plaza next to a pizza shop is an amazing little oddities shop.

Winding country roads in eastern West Virginia lead to an extraordinary place populated by fiberglass giants.

Bizarre Cavern.

True to its name, this little house presents like a dollhouse, and surprising details are revealed with a quick peek through the window.

There are eight natural springs around town, each with a slightly different taste.

The actor best known for slapstick comedy is memorialized in his home town.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

A natural spring situated on the grounds of the Hawthorne estate.

These unusual rooms on wheels are holdovers from the 1960s.

A giant time capsule not scheduled to be cored until 2040.

One of the only memorials dedicated to journalists who died in combat.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

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