McHenry County is located in the U.S. state of Illinois, a part of the area. Long known as a hub of agriculture and recreation it houses a major historic attraction. McHenry County Historical Society and Museum in Union, Illinois was first officially opened to the public back in 1976. Its a historian's delight and comprises of several relics like a 1885 town hall (more famous as Perkins Hall), a 1847 log cabin, and an 1895 one-room school which was used for c.1900 education programs. It also houses a modern 20th Century tourist cabin. A local history research library was added in 1982.The society also acquired Pringle School, situated on River Road. The limestone building is now in the restoration process.

The society not only maintains the county Museum but also makes available traveling exhibits, plaques historic structures and sites, holds useful and informative classrooms and workshops for adults and arranges a great variety of school programs.

By visiting McHenry County Historical Society and Museum, you can take a peek in the life style of the super rich Patrick Family of 18th centuries or gather an idea about the traditions and cultures of 1890's.Also featured here is the Marengo Opera House.

And the Chicago's Columbian World's Fair of 1893. A special guided tour of the 1847 Gannon Log Cabin in the company of Nancy Fike, Museum Administrator is also possible.

It remains open from May to October, every Tuesday to Friday and Sunday from 1.00 pm for just 3 hours.