St. Rose Mission

Historical marker location:

8174 Old Highway 12, Walla Walla, Washington

( Marker is on Old Highway 12 near U.S. 12, on the right when traveling east.)

aka Frenchtown.

The Hanford Site, located in southeastern Washington, was a major production facility for nuclear weapons during World War II and the Cold War. Today, it is the most contaminated nuclear site in the United States and is undergoing a massive cleanup effort.