San Francisco's newly reopened hands-on science museum.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

A monument to the love people have for their pets.

One man's eclectic collection of treasures found at sea.

This public art piece proves that in Portland even reporting the weather is a thing of whimsy.

Their motto is, "We've been bonkers for hats even longer than you have!"

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

Oldest building in California still in use.

This Pringle-shaped ledge makes for the perfect photo op.

Giant nude woman of Tijuana is also the artist's home.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

San Diego's most historic and haunted home.

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.