The tall masts of the historic ships Balclutha and C.A. Thayer at the San Francisco Maritime National Historic Park.
One Prudential Plaza, Two Prudential Plaza, the Aon Center, Aqua and Blue Cross-Blue Shield Tower stand tall in Downtown Chicago as seen from nearby Grant Park.
The stacks of floors of one of the Stemmons Towers looms in the sky over I-35 northwest of Downtown Dallas.
A light beacon looms over adjacent trees at DFW International Airport, Texas.
An old tree stretches to the sky over Minters Chapel Cemetery on the grounds of DFW International Airport, Texas.
Trees grow atop a hill in the morning light at the University of North Texas, Denton.