History of Cologne was considered a substitute for the German University of Strasbourg, which became part of France along with the rest of Alsace. Cologne prospered during the Weimar Republic and progress was made especially in governance, city planning and social affairs. Social housing projects were considered exemplary and were copied by other German cities. As Cologne competed to host the Olympics, a modern sports stadium was erected at Müngersdorf. Beginning of the 1920s civil aviation was permitted once more, and Cologne Butzweilerhof Airport soon became a hub for national and international air traffic, second in Germany only to Berlin Tempelhof Airport. At
Kilian of Cologne use of his monastery and pilgrim monks, several farms, with the fishing of the Rhine attached; three churches, several manses, vineyards, and exemption from some of the taxes in the city and in the empire. He also got charge of the monastery of St. Pantaleon, in the city, as well as of St. Martin's. It is evident there must have been Irish monks in the former as well as in the latter of these monasteries."" He died 19 January 1003, after which date the abbey appears to have declined in its Irish connection. Kilian of Cologne Kilian of Cologne, Irish