This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

The uniquely-designed winter home and sculpture studio of Anna and Archer Huntington.

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

This roadside attraction has been serving out its fair share of hearty folklore and chaos since 1858.

This bright yellow relic is the final survivor of a short burst of seashell-shaped petrol pumps.

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

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

Look closely and you’ll notice that the color changes a third of the way up the tower.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

This kitschy tavern is also home to rare early editions of "Treasure Island."

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

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

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

The second oldest continuously operating bar in Louisiana.

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

The final resting place of New Orleans' most famous voodoo priestess.

A snapshot of the city's fascinating voodoo culture.

Every week, a festive public jam session breaks out in downtown Asheville.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Rural churches in the middle of nowhere with religious frescoes by famous artist.

Burial site more than 300 years old.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?