H. H. Richardson’s Allegheny County Courthouse in Pittsburgh inspired many late-nineteenth-century imitators, including this courthouse, Waukesha County’s second. Its rock-faced walls, gabled entrance pavilions, heavy-arched portals springing from squat stone columns, stocky towers guarding the corners (though round with conical roofs), and a three-stage tower soaring above a hipped roof reveal Richardson’s influence. Rectangular windows on the first story and round-arched ones on the second lighten the ponderous mass. Stone transom bars and sills band both levels, festooned spandrels are set beneath the second-story sills, and a dentil course is at the eaves. A west wing, added in 1938–1939, links the courthouse to the stone jail of 1885, a simple box with rectangular windows, a hipped roof, and gabled wall dormers.