This church on a Tohono O'Odham reservation has stood since 1797.

A lovely park home with a few interesting guests.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

Drive up a paved road into "Nevada's Yosemite" for exquisite views and mountain hiking in an alpine setting.

The sun acts as a key that only fits this giant keyhole twice a year.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These structures were inspired by both Native American shelters as well as, strangely, an ice cream shop.

San Diego's most historic and haunted home.

An inconspicuous suburban street corner is the site of San Diego's worst air disaster.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

A Wild West saloon that helped define a generation of psychedelic rock.

See Hoover Dam and the bypass bridge from a perspective usually off-limits to the public, and float the upper part of the Black Canyon National Water Trail.

Built as a schoolhouse in 1914, this Mission-style building has also served as a dancehall, a library, an Army canteen, and now a cultural museum.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A tribute to the statues of Easter Island along Route 66.

One of the largest, oldest, darkest, quietest motel rooms in the world.

This Stonehenge-inspired solar calendar stands alongside a landfill, in the middle of the Nevada desert.

A sculpture of a salmon swimming through a brick building.

Portlandia is the second-largest copper repoussé statue in the United States.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

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

Only known mainland rookery of the threatened Stellar sea lion.

Fifty years after a “blast blasted blubber beyond all believable bounds,” this idyllic natural area commemorates the carnage.