Cologne Stadtbahn and main line railway trains, and occasional recreational boats on the Rhine. Düsseldorf is also linked by S-Bahn trains, which are operated by Deutsche Bahn. The Rhine-Ruhr S-Bahn has 5 lines which cross Cologne.The S13/S19 runs 24/7 between Cologne Hbf and Cologne/Bonn airport. There are also frequent buses covering most of the city and surrounding suburbs, and Eurolines coaches to London via Brussels. "Häfen und Güterverkehr Köln" (Ports and Goods traffic Cologne, HGK) is one of the largest operators of inland ports in Germany. Ports include Köln-Deutz, Köln-Godorf, and Köln-Niehl I and II. Cologne's international airport is Cologne/Bonn Airport
History of the Jews in Cologne Jewish quarter was rebuilt and the previous inhabitants forgotten. After the destruction of the community during Second World War, the medieval foundations were discovered, among them a synagogue and the monumental Cologne "mikveh" (ritual bath). The archeological survey was conducted after the war by Otto Doppelfeld from 1953 to 1956. On the basis of the awareness of history the area has not been reconstructed after the war and has remained as a square in front of the historical Rathaus. Today, the Jewish quarter is part of the "archeological zone of Cologne". In Cologne there was one of the largest Jewish