Washington Co. Military Museum will be open Sunday, May 30th 1 p.m. to 4 p.m. Monday, May 31st 11 a.m. to 4 p.m. 219 Sitler Drive Washington, IA Washington Co. Military Museum will be open Sunday, May 30th 1 p.m. to 4 p.m. Monday, May 31st 11 a.m. to 4 p.m. 219 Sitler Drive Washington, IA