Ratingen is a town in the district of Mettmann in North Rhine-Westphalia, Germany. It lies in the northwestern part of Berg about 12 km northeast of Düsseldorf.

Gagarin, known until 1968 as Gzhatsk (Гжатск), is a town and the administrative centre of Gagarinsky District of Smolensk Oblast, Russia, located on the Gzhat River, 240 kilometers (150 mi) northeast of Smolensk, the administrative centre of the oblast. Population: 31,721 (2010 Russian census); 28,789 (2002 Census); 28,867 (1989 Soviet census).