German Bank is a historic building located in the Lower Main Street district of Dubuque, Iowa, United States. The city's German community was its most prominent ethnic group in the mid to late 19th century. Like many other cities in Iowa of that area it had banks that were owned by, and catered to, members of their particular immigrant communities. T.H. Thedinga, the city's first German-born mayor, started this bank in 1864 to serve immigrant Germans. In 1868 it moved from its original location on Main Street and into the former Dubuque Miners' Bank building. That building was torn down in 1901 in order to construct this one. It was designed by Dubuque architect John Spencer in partnership with Chicago architect W.G. Williamson. The three-story brick building has a highly decorative main f