Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

Colorful Native American paintings are hidden within this small cavern.

A popular winter vacation destination for migrating monarch butterflies.

The home of one of California's most important horticulturalists wilts amidst a lovely park.

One incredible room in the Santa Barbara Courthouse is covered in wall-to-wall canvas murals.

This house is a mosaic of tiled artwork sourced from local artists.

The beautiful behemoth is one of the largest trees of its kind in the United States.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

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

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

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

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.

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

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

This giant temperature attraction created some giant electric bills.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

This historic national park is covered in the stunning ruins of red rock pueblos.

The only road through the heart of Glacier National Park.

New fungal and bacterial species call this deadly lake home.

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.