Moonbows over Kentucky.

World's largest collection of Coke-related items not held by the Coca-Cola company.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

The picturesque southern city served as the zombie-filled town of Woodbury in 'The Walking Dead.'

Tour the sci-fi-esque reality of governmental disease management.

A museum dedicated to the history and exploration of both popular music and science fiction.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

Only known mainland rookery of the threatened Stellar sea lion.

On the Oregon coast there is a natural hole that seems to be draining the sea.

This abandoned prison castle has become an imposing gallery of graffiti art.

A brick-paved former section of the historic coast-to-coast highway.