Complex sentence: Though the courthouse was modeled after the Lee County structure it does differ; the Lee County building, in Dixon, Illinois, has a rooftop dome and also is longer and wider than the DeKalb County building.
Split into simpler sentences: Though the courthouse was modeled after the Lee County structure it does differ. The Lee County building, in Dixon, Illinois, has a rooftop dome and also is longer and wider than the DeKalb County building.