The Prairie School of design was an architectural style and movement that developed in the United States, especially in the Midwest, during the late 19th and early 20th centuries. The movement was an attempt to create a distinct North American style of architecture without sharing the design elements of the more widespread styles of European classical architecture. One of the prime examples of this Prairie School building is the Harold Bradley House, a private home located in the northern state of Wisconsin.

The house was designed and built in 1909 by architects Louis H. Sullivan and George Grant Elmslie. The story behind the real ?designer? of the house contains a bit of controversy. It is often believed that Sullivan?s role in the overall design was kind of overblown. Elmslie was regarded to be the main designer with only few suggestions from Sullivan. Nonetheless, the home is still a premier specimen of the architectural movement that also includes the nation?s renowned architect, the late great Frank Lloyd Wright.

The Harold C. Bradley House was designated a National Historic Landmark in 1976.