The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This shallow cave got its name from copious amount of human bones found inside.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This boulder stays on its mountain thanks to a huge chain and on the map due to local legend.

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

Moonbows over Kentucky.

The world's longest known cave system.

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

A bizarre roadside attraction and the first instance of miniature golf in the world.

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

I-95's Tijuana-style celebration of kitsch at the Carolina border.

The world's largest set of the ten commandments lay nestled in the heart of the Great Smoky Mountains.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Practice your Dirty Dancing lifts in the manmade lake where Johnny Castle himself did.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

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

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

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

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

Home of an evil witch famous within southern folklore.