Lewis and Clark Trail State Park
36149 Highway 12
7 miles southwest of Dayton, at Highway 12 & Timpley Road
A 37-acre camping park. Not open to non-campers--even with state park pass.
Columbia County Fairgrounds
And horse race track
Dayton Historical Depot
222 E. Commercial Street
+1-509-382-2026
$3/adult, children 12 and under are free
May-Oct: Tu-Thu 11-17h, Fri-Sat 10-17h, closed Sun, Mon, holidays; Nov-April: Tue-Sat 11-16h, closed Sun, Mon, holidays
Built in 1881, it is the oldest surviving train depot in the state.