is an unassuming little building that boasts a significant history. This wood-frame, two-story building in The Dalles once was the seat of government for the largest county in the United States. The building is one of the last surviving territorial courthouses and is on the National Register of Historic Places. When Wasco County was established in 1854, the county boundaries extended from the summit of the Cascade Mountains to the summit of the Rockies, and included parts of Oregon, Idaho, Montana and Wyoming. View historical items and artifacts from those early days when this was the first county courthouse built west of the Rockies. Located behind The Dalles Area Chamber of Commerce and Visitors/ Center, in Trevitt’s Historic District.
410 West 2nd Place PO Box 839 The Dalles, Oregon 97058