New Exhibit at the McHenry County Historical Museum! Museum is open starting March 16 until October 19th. Tuesday - Friday 1 - 4 PM and Saturdays 11 AM - 4 PM. 6422 Main St. Union, IL 60180

It Would be a Wonder: The Story of Wonder Lake. Wonder Lake, a man-made lake in the bed of the Nippersink Creek, was created in 1929 to provide summer cottages for Chicagoans in eastern McHenry County. Before the creation of the lake, this area was open farmland. The developers declared it would be a ‘wonder’ if they could complete the project. Discover how Wonder Lake was created, view photographs of the lake as it was formed, and learn how residents celebrated the official opening day in 1930.