The remaining Hessian province of Rhenish Hesse ("Rheinhessen", capital: Mainz) and the western part of the province of Nassau (containing the Westerwald, part of the Taunus range and the Rhine end of the Lahn river) became part of the French occupation zone and eventually part of the modern state of Rhineland-Palatinate. The separation of Rhenish Hesse from Greater Hesse caused Mainz to lose its six districts that lay east of the Rhine, even though they are still named today as being part of Mainz – such as Mainz-Kastel, now a district of Wiesbaden.