DSC_1485 Published March 11, 2015 at 370 × 500 in Tucson, Arizona ← Previous Next → The sun sets on a saguaro cactus at Saguaro National Park in Tucson, Arizona on Sunday, March 8, 2015. The sun sets on a saguaro cactus at Saguaro National Park in Tucson, Arizona on Sunday, March 8, 2015.