California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

The largest drain hole in the world.

Napa's oldest building is now a Mexican restaurant.

Once the gateway to the utopian dream-village of a Civil War embalmer.

This lighthouse has been guiding shipping into the Golden Gate since before the American Civil War.

This abandoned boat was left in place thanks to its rotting beauty.

The southernmost outpost of the Russian Empire in colonial America.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.

Climb 200 stairs up the tallest lighthouse on the West Coast for an unbeatable view.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

A trash dump made beautiful by nature's power.

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

Commonly referred to as the most photographed Victorian home in the United States.

Canyon walls shrouded in ferns.

This massive redwood tree has a drive-thru tunnel carved out of its trunk.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

This historic steamboat is scuttled just a few hundred feet from where it was built over a hundred years ago.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

Only known mainland rookery of the threatened Stellar sea lion.

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

This coastal rock formation resembles a churning cauldron at high tide.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

Ride a mechanical corn dog at the alleged birthplace of America's favorite deep-fried wiener.

A Roman-style column in Oregon hides a spiral staircase inside.