Offenbach

In full  Offenbach Am Main,   city, Hesse Land (state), west-central Germany, a river port (coal and oil) on the left bank of the canalized Main. First mentioned in 977, it was part of the imperial forest of Dreieich, and a mint was established there in 1407. Acquired by Count (later prince) von Isenburg-Birstein in 1486, it began its prosperity with an influx of Huguenot craftsmen in 1698–1703. Annexed to Hesse in 1816, it grew steadily