Step into a pastel time capsule where candy is truly dandy.

The hallowed remains of a 900-year old Ancestral Pueblo great house.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

A celebrity from the late Cretaceous period.

The only National Monument ever to go missing for nearly 50 years then resurface in a dump.

An 18-mile-long tunnel for sewage waste will soon wind within the bowels of Washington, D.C.

The span is crooked and made from two older recycled bridges.

A surprising, but overlooked example of geology in the middle of the nation’s capital.

A modest reminder of treacherous waters at the Golden Gate.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

San Francisco's first World's Fair, dedicated to the wonders of California.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

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

Once the largest windmill outside of Holland, with enormous 114 foot sails.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A huge musical instrument played by the ocean.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

What began with a single, 357-pound chunk of the Canyon Diablo meteorite grew to be an impressive collection. 

This “living museum” at UCLA exhibits thousands of plant species from all over the world.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

Don't get it twisted: This is the oldest pretzel bakery in the United States.