Martin Kaymer (born 1984), golfer Twin towns – sister cities Mettmann is twinned with: Laval, France (1974) Friendly cities Mettmann also has friendly relations with: Żnin, Poland (1997) Goražde, Bosnia and Herzegovina (1998) Markranstädt, Germany References External links Homepage of the City of Mettmann Homepage of the District of Mettmann Homepage of the Neanderthal museum Towns in North Rhine-Westphalia Mettmann (district) Districts of the Rhine Province