A plaque commemorates the spot in the Oregon woods where the first-ever Geocache was hidden.

Trace the history of writing at this unusual North Carolina destination.

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

A 24-hour vending machine restocked daily with homemade full-sized pecan pies.

This Old Testament garden features 100 plants from biblical times.

The world's largest squirrel statue clutches a pecan bigger than your head.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Of course the grave of JFK's assassin is surrounded by conspiracy theories.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

Eulogizing an unknown man's unusual demise.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

Roaming bison and a spectacular view at the highest point in Nebraska.

A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

This family driveway also serves as the highest point in Illinois.

At the tallest peak in Colorado, an electrifying mix of thin air, lightning, and rivalry.

A large stone map of Arkansas awaits visitors to its highest point.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

The highest point in Alabama was almost completely deforested, but is now home to protected towers and trees.

This tiny, painted door at the base of a tree stump has been a fixture of the Harvard University campus for decades.

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

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

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

A forensic lab dedicated to fighting crimes against wildlife.

One man's swirling six-acre monument of stone.