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

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

These elusive, isolated rodents evolved into a distinct, locally iconic subspecies.

The remnants of a creative early method of wildfire prevention.

A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

A rare kind of blue bear can be found chiefly in the national park that shares their name.

This natural wonder is disappearing at an alarming rate.

The natural hot spring that was integral to the creation of Canada's first national park.

The illuminated falls are a gem in North Cascades National Park.

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

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

These ruins of a pre-Columbian cliff village are among the most beautiful and well preserved in New Mexico.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

Ancient pueblos built into the base of a natural canyon wall.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.