A unique botanical garden housed in three giant geodesic domes.

The rusting remains of the largest assembled WWII fleet on the West Coast.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

A fitting attraction for the corn capital of the world.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

"I did this all while you were watching TV."

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.

This Oakland fairytale kingdom, fiercely devoted to childlike whimsy, was an early inspiration for Disneyland.

The oldest lawn bowling club in the United States.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

A man-made island in scenic San Francisco Bay.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

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

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

A controversial memorial at the place where Captain Cook met his violent end.

This black shoreline is made up of exploded lava particles.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."