400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

This Seattle store is packed with all sorts of curious creatures and creations.

One North Dakota man's vast collection of rare rocks, polished orbs, and geological wonders.

One of the best-preserved Native American mounds remaining in the southern United States.

The quirky gift from West Berlin for the 1968 World's Fair still stands in Hemisfair Park.

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

A small town built on an abandoned airfield has former runways as streets and a bar and grill in an old airplane hangar.

A miraculous natural phenomenon known as "the spring that breathes."

Abandoned businesses, homes, and rusted cars are all that remains of this stopover town.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.