Established in 1975, and still being expanded, this living history museum adjacent to the Mason County Fair Grounds attempts to preserve and present the state's agricultural heritage. Restored farm implements and machinery are displayed and demonstrated. Through the art and science of taxidermy, it is possible to see General (1972–1981), who, at 2,850 pounds and 19.5 hands, is reputed to have been the third-largest horse that ever lived. Several early buildings moved from the surrounding region have been rebuilt and are open as exhibits. Although one could wish for more authenticity in some of their details, most of these buildings would have been lost if they had not been moved. One of the earliest buildings re-erected at the museum is Walnut Grove.