One street divides a single town that stands in two U.S. states.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

The skeletal white beams stand as a monument to religious dissent.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

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

A key producer of charcoal iron in the early 1800s, the structure still stands today.

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

The bad-ass ride of a soul legend, housed in one of the world's few soul museums.

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

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

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

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

Walk the whole Mississippi River!

The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

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

The secret city built by the Manhattan Project.