NOTICE: The Trinity Site Open House scheduled for Saturday, 18 October 2025, has been cancelled. Please refer all questions regarding the Open House to the White Sands Missile Range Public Affairs Office at 575-678-1134 or usarmy.wsmr.atec.list.pao@army.mil
“The effects could well be called unprecedented, magnificent, beautiful, stupendous and terrifying. No man-made phenomenon of such tremendous power had ever occurred before. The lighting effects beggared description. The whole country was lighted by a searing light with the intensity many times that of the midday sun.”
Brigadier General Thomas Farrell, Manhattan Project Deputy Commanding General
Trinity Site is where the first atomic bomb was tested at 5:29:45 a.m. Mountain War Time on July 16, 1945. The 24.8-kiloton explosion not only contributed to a quick end to the war in the Pacific, but also ushered the world into the atomic age.
