One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

A massive hydrovolcanic explosion left a half-mile wide crater in Death Valley.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.

A mountain range on an active U.S. Navy base hides thousands of mysterious prehistoric rock carvings.

A Tibetan Temple and Buddhist organization just off the beaten path in Northern California.

A playing field for a popular French past time can be found tucked away in a quiet corner of Golden Gate Park.

A restored 1920s cascade stairway provides one of the best views of Oakland's Lake Merritt.

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

A remote desert lookout offers unparalleled views of the California badlands for those who brave the trek.

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

Every weekend, people gather here for a brief chance to see their loved ones on the other side of the United States–Mexico border.

A modest reminder of treacherous waters at the Golden Gate.

A massive ultra-modern church presents a science-fiction view of Catholicism's inclusive future.

Thirteen trees representing the original thirteen colonies were planted with soil from historic Revolutionary battlefields.

A humble garage, world-famous for being the epicenter of a technology revolution.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

Perhaps the most unique of any Frank Gehry design for one simple reason: Gehry himself actually lives here.

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

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

Successful artist residence program has filled this ranch with dozens of sculptures over the years.

Honoring the famed folktale author, this California museum looks like it belongs in the Black Forest.

Early prototype for Frank Lloyd Wright's Guggenheim.

Four hundred granite steps were built into this massive rock by the National Park Service.

This sculpture garden in Death Valley makes you feel like you've slipped into some alternate reality.