A building so large that it has its own weather.

A luxuriant botanical garden below sea level.

A Circus legend leaves an unexpected endowment.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

Where manatees are the snowbird vacationers in these balmy Florida springs.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

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

The Battle of Atlanta in 360 degrees, featuring a corpse that bears a striking resemblance to Clark Gable.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

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

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.

A rusted metal giant pays tribute to Birmingham’s industrial past.

This stone memorial pays tribute to a massive shipwreck which was sadly overshadowed by the death of John Wilkes Booth.

Once decrepit and slated for demolition, now one of the longest pedestrian bridges in the world.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

This simple, broken column marks the final resting place of one of America's most famous explorers.

Mass graves and Victorian monuments mark the history of Memphis in this 19th century cemetery.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

Elvis's own personal tropical hideaway.

This historic train station has been converted to a locomotive themed hotel.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Walk the whole Mississippi River!