The Pikes Peak Highway snakes towards the summit of its namesake mountain in Colorado.
Highway 90 stretches to the horizon near the West Texas town of Valentine.
The sun rises over the Gulf of Mexico, silhouetting the Galveston Island Historic Pleasure Pier, Galveston, Texas.
The tall masts of the historic ships Balclutha and C.A. Thayer at the San Francisco Maritime National Historic Park.
The south tower of the Golden Gate Bridge disappears into the San Francisco fog.