The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

Quite simply the largest tree in the world (by volume).

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A winding path built in secret on the edge of the continent.

America's most famous piece of self-built architecture.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A huge musical instrument played by the ocean.

Formerly the most gerrymandered district in the U.S., it twisted and turned along racial borders.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

This small exhibit explores the lives of Chang and Eng, the first known conjoined twins.

The North Carolina grounds are leased in perpetuity to the British Commonwealth for as long as the WWII sailors are buried there.

An annual celebration of the region's successful elk reintroduction program.

This winding road of 318 curves is a must-visit for (careful) motorcycle and sports car enthusiasts.

A historic dam made famous for its turbines and feature in a Hollywood classic.

A Nessie-like monster supposedly lurks in this lake.

Down the road from where the Wright brothers lifted off is another flight tribute practically hidden from sight in the woods.

A wonderful display of arts and crafts handmade by local artisans in the Southern Appalachians.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Practice your Dirty Dancing lifts in the manmade lake where Johnny Castle himself did.