This public elevator links the lower city to the upper city of Salvador.

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

Odd outsider art installations surround a Gold Rush-era ghost town.

"Only the devil could play golf here."

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

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

A memorial to the unknown and unheralded men and women of the Cold War military and intelligence services.

The hundreds of movies and television shows shot in this high desert town are commemorated in a unique museum.

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

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A massive volcanic plug is now a protected area that hosts a number of bird species.

On the Oregon coast there is a natural hole that seems to be draining the sea.

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.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

One of the world's longest murals depicts the history of diversity in Los Angeles.

Though tiki culture has gone in and out of fashion, the Tonga Hut has always been flying the flag in Los Angeles.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.