Used as a military post in three different engagements, this fort has remained incomplete and unfired upon for nearly 200 years.

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

A monument celebrating the idea of reaching inaccessible places.

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

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

Narrow gorges and deep pools created by long-ago glaciers.

The ruins of a paper mill destroyed during the Civil War still tower over a tributary of the Chattahoochee River.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

These ancient ritual mounds are our best window into the culture of the ancient Mississippians.

One of the world's largest automobile junkyards is a unique landscape of metal and moss.

Incredible miniature towns and buildings created and decorated with thousands of tiny rocks.

They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

Georgia's highest point was given its strange name thanks to a simple translation error.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

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

Bad farming practices caused this unnatural natural wonder.

Designed by famed architect Horace King.

The site of the notorious Camp Sumter Prison is now a peaceful memorial.

A historic Civil War estate-turned-museum looks back on the Confederate States of America.

The only Florida state park with publicly accessible caves.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

Carved faces add a touch of magic to this island's impressive oak trees.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

This abandoned bridge is now a favorite haunt for graffiti artists.