In one of the most devastating acts of domestic terrorism on American soil, the Alfred P. Murrah Federal Building was bombed. Constructed in 1977 and containing regional government offices, it was sheared by a massive explosion at 9:02 a.m. April 19, 1995.

Following investigation and recovery, the structure’s remains were demolished roughly a month later, as were two other heavily damaged buildings across the street. The entire 3.3-acre site subsequently became home to the Oklahoma City Nat...