This 252 step staircase offers stunning views of San Jose.

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

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

Here, visitors can swing with the waves of the Pacific Ocean.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

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

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.

A men’s restroom became a sandwich shop.

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

A strange house built only at night, with rumored mystic inspiration.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

The headquarters of a secretive order is also a beautifully-designed park.

A giant chess set, minus the psychedelic drug trip.

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

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

The headquarters of the semiconductor giant has a 10,000-square-foot museum.

One of the largest Marian shrines on the West Coast stands rather unexpectedly in Silicon Valley.

800 apricot trees honor Silicon Valley's agricultural history.

It should come as no surprise that the world's largest artichoke lies in the town that calls itself the "Artichoke Center of the World."

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Two thousand artifacts from around the world collected by one woman who loved to travel.