The Giles County Historical Society (GCHS) is a non-profit 501(c)3 organization in good standing, dedicated to preserving the history of Giles County. The society aims to achieve this through various objectives that include providing a repository for Giles County family histories, documents, and artifacts; perpetuating interest in Giles County history; assisting those interested in genealogical research; providing local historical facts to the youth of the area in cooperation with the County and neighboring school systems and organizations; providing and maintaining public access to the GCHS Complex; and pursuing the preservation of any and all endangered Giles County history, including artifacts, sites, and records.

In 1985, the Andrew Johnston family heirs donated the family home built in 1829, a small building built in 1857, which served as a doctor’s office, and a modern two-car garage to the Society. The property was placed on the National Register of Historic Places, and an endowment fund was established to restore and preserve the property as a museum. Construction of the Museum was completed in 1997, to house the many items of historical interest that present and former County residents had donated.

Today, the Society Complex consists of the Museum, Andrew Johnston house, Doctor’s Office, and Research Office (in the old garage). The Society's extensive collection includes reference information about the families of Giles County, historical documents, Civil War memorabilia, Meissen porcelain, Johnston family and other period furniture, Native American artifacts, and other items of historical significance to Giles County.