The Old New York County Courthouse at 52 Chambers Street in Manhattan, New York City, more commonly known as the Tweed Courthouse, was built in Italianate style with Romanesque Revival interiors, using funds provided by the corrupt William M. "Boss" Tweed, whose Tammany Hall political machine controlled the city and state governments at the time. The project was completed by architect Leopold Eidlitz who added the rear wing and interior renovations from 1877–1881, departing from Kellum's classicism with "an American version of organic architecture expressed through medieval forms".