An eatery for UFO seekers on the Extraterrestrial Highway.

This sign designates the road that leads to the infamous Area 51.

Narrow slot canyons in a badland eroded into soft sedimentary rock provide an otherworldly landscape in this remote Nevada state park.

A tunnel with windows, so you don't miss out on the impressive views.

The flow from this waterfall sometimes comes out of springs below its rim.

The arch that celebrated the completion of the Lincoln and Victory highways.

Curiously, this large sporting goods store features 14 wax representations of American presidents.

This wilderness hike to a waterfall has an unlikely beginning in suburban Reno.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The eerie ruins of an isolated abandoned town nicknamed "the Widowmaker" for its deadly gold mine.

An artsy hidden staircase leads to breathtaking views of San Francisco.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

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

A Roman-inspired temple once controlled half of San Francisco's waters.

Historic home to one of the most famous women pioneers of the 19th century.