An enormous natural sandstone bridge in Kentucky.

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

Moonbows over Kentucky.

Prehistoric animals decorate this popular outdoor park.

This hollow steel globe is the second-largest in the world.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

A 315-foot spire jutting out from the Blue Ridge Mountains makes for breathtaking views.

So many migrating birds roost on the bridge, it has a special summer speed limit.

A mountaintop space observatory that is certified dark.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

An annual celebration of the region's successful elk reintroduction program.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

This stunning home looks like it belongs in medieval Europe, not North Carolina.

This research center for rare prosimians is studying how they sleep to help prolong human life.

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

One of the best places to see feral Colonial Spanish Mustangs in the United States.

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

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

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

A sculptor's dream castle turned fantastical ruin.

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

These eerie outliers of the lightning bug family glow a mysterious blue color.

This natural wonderland is a unique chance to explore a Carolina bay, a mysterious geological formation of unknown origin.