This giant temperature attraction created some giant electric bills.

The world’s largest concentrated solar plant generates as many problems as megawatts.

Legends surround this jagged rock formation in the New Mexico desert.

Oddly shaped rock formation, misassociated with a nearby utopian community.

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

A house carved into a rock in the 1940s.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

In California, colorful roadside signs remind us all that love transcends borders.

The highest point in Arizona is an oddly snow-topped peak within the otherwise arid state.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

A speck of nature and art in one of San Francisco’s most notorious neighborhoods.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

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

A man-made island in scenic San Francisco Bay.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

This private residence was the template for one of the most beloved television homes of all time.

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

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

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

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

One of few lasting examples of the brief octagon craze that developed into folly.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Only hotel where you can legally launder money.