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

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

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

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

The final resting place of the camel who served with the Confederate Army during the Civil War.

This hotel was used during the Manhattan Project to house official visitors.

One of the Cemestos prefab homes built to secretly house thousands of Manhattan Project workers.

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

The juke joint where legendary soul artists ate, drank, and made merry.

A failed utopian experiment for British expats in the American South is now a Victorian village frozen in time.

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

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

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

The secret city built by the Manhattan Project.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

This massive roadside mascot was the first version of the giant to illustrate his butt.

This simple home was the beginning of a long journey for the iconic Western film star.

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.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.