Nida

Nida was an ancient Roman town in the area today occupied by the northwestern suburbs of Frankfurt am Main, Germany, specifically Frankfurt-Heddernheim, on the edge of the Wetterau region. At the time of the Roman empire, it was the capital of the Civitas Taunensium. The name of the settlement is known thanks to written sources from Roman times and probably derives from the name of the adjacent river Nidda.

Source: Wikipedia