Barbed wire keeps out trespassers at an abandoned fire lookout tower at Rich Mountain, Arkansas.
Abstract architectural detail of the Memorial Student Center at Texas A&M University.
Gatlinburg, Tennessee, nestled in the hazy Great Smoky Mountains.
The Veer Towers rise into the blue Nevada sky at CityCenter, Las Vegas.
Granite blocks for erosion control along a beach at the eastern end of Galveston Island, Texas.
A tree at Tandy Hills Natural Area in Fort Worth, Texas, is silhouetted by the first light of dawn.