The Deerfield Historic Village, 517 Deerfield Road, is open from 2 to 4 p.m. on Sundays from June through September and by appointment. The Caspar Ott log house, the oldest standing building in Lake County, celebrates its 175th anniversary this year. Other buildings include a farm house, one-room schoolhouse, carriage house and visitor center. The permanent exhibit is “Deerfield History," from the first settlers through the 1950s. The Deerfield Area Historical Society preserves and maintains the Historic Village. Admission is free, donations are welcomed.