Au and Haidhausen used to be hostel areas for trade workers and day labourers outside of the medieval town walls of Munich. Both formerly independent municipalities were incorporated into the City of Munich on 1 October 1854 and developed into suburbs during the Gründerzeit.
Au and Haidhausen were previously residential districts for artisans and laborers outside the medieval city walls of Munich. Both formerly separate towns merged into the City of Munich on October 1, 1854, and evolved into suburbs during the Gründerzeit period.