Museum Opening Day, May 1st, McHenry County Historical Society Museum  opens for the season, marking its 52nd year. "Bottles, Barrels & Brews: McHenry County on Tap" celebrates the county's brewing history and the recent return of local breweries, including Chain O' Lakes Brewery – located in the former McHenry Brewing Co. building in McHenry. View beer memorabilia. There will be a charge to sample local craft beer. From 6-8pm, 6422 Main Street, P.O. Box 434, Union, IL 60180 Ph: (815) 923-2267