The Washington County Historical Society currently operates two museums which are both located on the National Register of Historic Places.

Warden’s House Museum – Stillwater, Minnesota

The Warden’s House Museum was built in 1853 as the residence of the Minnesota Territorial Prison warden. The museum consists of 14 rooms decorated in the late 19th and early 20th century style. Many rooms are like that of a upper middle class household while other rooms depict certain historic themes of Washington County including a room dedicated to the lumbering industry and still another that shows off items that children would use more than one hundred years ago.

Hay Lake School and Erickson Log Home – Scandia, Minnesota

The WCHS museum site at Scandia includes the one-room Hay Lake School (1896) and the Johannes Erickson Log Home (1868). Together, the buildings illustrate pioneer life for the area’s 19th-century Scandanavian immigrants.