Cobb Building, 1301–1309 Fourth Avenue, Seattle, Washington, USA. The building was purpose-built as a medical-dental building, probably the first such building in the United States. It is the only remaining building whose design conforms to the original Howells & Stokes plan for the Metropolitan Tract, the old downtown site of the University of Washington. It is on the National Register of Historic Places, ID #84003485. . This is actually a composite of two photos (upper and lower portions), created with Hugin.