Welcome to Wisconsin's Architecture and History Inventory (AHI).

This resource is a search engine that provides historical and architectural information on approximately 120,000 properties in Wisconsin. The AHI contains data on buildings, structures and objects that illustrate Wisconsin's unique history.  The AHI documents a wide range of historic properties such as the round barns, log houses, metal truss bridges, small town commercial buildings, and Queen Anne houses that create Wisconsin's distinct cultural landscape. It is a permanent record maintained by the Wisconsin Historical Society.

Keep in mind that this is not a comprehensive list of all old Wisconsin buildings and structures. The inventory has been assembled over a period of more than 25 years from a wide variety of sources. In many cases, the information is dated. Some properties may be altered or no longer exist. The majority of properties included in this inventory are privately owned and not open to the public. Inclusion in this inventory conveys no special status, rights or benefits to owners of these properties. Please respect the rights of private property owners when visiting any of these properties.

Images of properties in the Architecture and History and Inventory are being digitized, in part, through the support of a Preserve America grant administered by the National Park Service, Department of the Interior.