The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

One of the most unusual geological features, recognizable from a dozen hit movies.

The liveliest ghost town in the state.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

First LEED-certified gas station in the United States.

The remnants of a creative early method of wildfire prevention.

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

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

An Old West film set seen in countless TV shows and movies is open for the public to explore.

Bug-devouring flora are the stars of a special wing of the glass conservatory.

Colorado Boulevard’s historic bookstore, operating since the bustling city of Pasadena was merely some orange groves and a few ostrich farms.

Some of the most unusual (and in some cases, disgusting) flavors of soda imaginable.

This Chase branch is an homage to Old Hollywood.

A carousel trades in its classic horses and calliope for endangered species, native flora and fauna, and a modern soundtrack.

The blinking light atop the iconic landmark has been sending secret messages for decades.

60 feet of towering steel balances gracefully.

Iconic Los Angeles residence famous for its 19 statues of Michelangelo's David.

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

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

Thousands of turbines whir at the origin of North American wind power.