This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

The last remaining houses of a bygone world immortalized by John Steinbeck in his novel “Cannery Row.”

The stately birthplace of California's statehood.

This remarkably simple jail went over a century without an escape.

Behold the uncanny sight of the Golden Arches—rendered in black.

A commercial fishing boat stranded on the California coast.

A massive volcanic plug is now a protected area that hosts a number of bird species.

Home to a forest of whimsical pygmy Coast live oak.

A remote crossroads honoring a fallen talent.

Where a railroad loops under or over itself to rise or drop more than 70 feet in a short distance.

Brightly colored 30-foot-tall totems light up the desert sky just outside Las Vegas.

A mining camp built around an unexpected occurrence of silver.

The unusual patterns in this rock formation result from two distinct modes of weathering.

This giant temperature attraction created some giant electric bills.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

Come for the fried chicken, stay for the history at Oklahoma's oldest bar.

A museum and apothecary garden devoted to the history of frontier medicine.

Home to the story of the outlaw turned funhouse mummy, Elmer McCurdy.

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

This unusually circular centenarian barn became a Route 66 icon.

More than 700 species live within this murky marvel of a swamp on California's coast.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

It's not your typical library, memorial, or book store.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.