map of germany with state norrth rhine-westphalia map separately with largest cities skylines icons in tints of blue color

aachen architecture bielefeld blue bochum bonn border cartography cathedral cities city cityscape cologne color der design dortmund duisburg dafrac14 sseldorf essen europe flag gelsenkirchen geography germany icon icons illustration land landmark largest leverkusen map metropolis monchengladbach mulheim munster nordrhein norrth north paderborn palette panoramic region rhhr rhine rhinewestphalia rooftop separately sign silhouette skyline skylines state street tints tourism tower town travel urban vector westfalen westphalia wuppertal