Each winter this underground cave forms a dazzling ice palace.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

An optical illusion found amid a logged redwood forest.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This little museum has an exhibit devoted to the elusive forest denizens.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

A herd of roughly 250 American bison roam these plains.

A singular collection of hand-built art deco cars are held in a building with style to match.

Despite being made of a seashell mortar, the crumbling remains of this historic Florida mill are still standing.

Believed to be haunted, this old cemetery is beautifully adorned with Spanish moss hanging from the trees.

The third tallest lighthouse in America once guided author Stephen Crane to safety.

These mysterious ruins are hidden amid this sleepy coastal city.

This whimsical outsider art wall holds tiny treasures donated by the local community.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.