Sports history, made in the Arroyo Seco.

These subterranean storage areas hold emergency water reserves.

Guns that have been defending San Francisco since 1904.

Faceless white figures loom over the city from the rooftop.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

The "3rd largest" city in California is an empty mirage of suburbia in the middle of nowhere.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

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

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

The tea room that pushed the boundaries of adorable straight into... we can't find the words.

Quite simply the largest tree in the world (by volume).

Towering basalt columns, a creation of fire and ice.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

The menacing creature had a tremendous influence on the local culture before being exposed as a hoax.

The highest point in South Dakota contains the ashes of Valentine McGillycuudy, the "Holy White Man."

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

Just a man taking his prehistoric pet for a stroll.

Seth Bullock, the sheriff of Deadwood, built this town immediately after Teddy Roosevelt’s death in 1919.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This friendly fellow was built to honor an advancement in mineral processing.