The Young Catholic Students Youth Centre is situated within medieval walls in the ruins of the city walls originally erected in 1180, or more precisely the seven-storey Gereon Tower. Twenty-two pupils are supervised there during the afternoons from Mondays to Thursdays; this number increases to thirty-five during holiday activities. The supervisory team comprises three part-time educational staff, one community service director, and seven honorary young people working part-time, as well as trainees, supervising pupils from the Hansa-Gymnasium.