Annual Trinity Site Tour

Don’t miss the fascinating Trinity Site Tour this October 18, 2025!  The Trinity Site is where the first atomic bomb was detonated on 5:29:45 a.m. Mountain War Time July 16, 1945, as part of the Manhattan Project. Click title for details.

Trinity Site Open House Changes Dates

PHOTO CUTLINE: The world’s first atomic bomb detonation at Trinity Site. Courtesy WSMR

2022 Dates Move to April 2 and October 15 (Alamogordo, New Mexico, December 14, 2021) – White Sands Missile Range has announced that the 2022 dates for the Trinity Site […]