This ancient settlement contains some of the largest earthen mounds in North America.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The world-record holder for the longest bridge stretching continuously over water.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

A museum and shop on Bourbon Street located in the French Quarter.

An ode to "The Queen of Appalachia."

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.

A restored, one-room African-American schoolhouse in the diva's hometown now preserves the legacy of its most famous student.

Elvis's own personal tropical hideaway.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Home to drunken tower-climbing goats... seriously.

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

An abandoned theme park with a strange and tumultuous past.

This modern castle sat empty for decades before a fire inspired its builders to complete its luxury halls.

The world's longest known cave system.

The legend of a local monster still haunts this small town.

This was the first homestead registered after President Abraham Lincoln signed the Homestead Act into law.

This erect, phallic geological spire wasn't always named so domestically.

A true roadside icon standing on the same plains that the herds once roamed.

The world's largest Holstein cow.