The highest point in Virginia can only be reached by passing through ponies and flowers.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This structure among the trees was the result of divine inspiration.

This building contains handprints that are well over a century old.

A natural sandstone bridge hidden in the Sewanee forest.

In one of America’s oldest mountain ranges, a long-awaited section of a scenic highway is now open to the public.

The first full-scale tunnel built in America is short but scenic.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

Visit this playground of waterfalls, caves and sinkholes.

Enormous lake at the bottom of a unique cave system.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

A trek through the solar system here on earth.

You’ll feel like you’ve gone through the looking glass at this contemporary art museum filled with glass sculptures of every size, shape, and color.

These mysterious ruins are hidden amid this sleepy coastal city.

The highway's southernmost spot is a beloved local attraction.

One of the best places in Florida to spot rare, carnivorous pitcher plants.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

Step back into the glory days of Florida's nascent tourism industry at this Gilded Age palace.

This now-deactivated naval base defended the Florida coast for centuries.

The ruins of a once-thriving sugarcane plantation that was burned in the Second Seminole War.

One of only two pod-shaped homes designed by Frank Lloyd Wright.

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

A peaceful, unique botanical garden complete with waterfalls, mini islands, and swans.

Two men built this castle on the Florida coast as an artistic “landscape sculpture.”