Abstract: The question was asked by a girl of about 12 standing in front of the synagogue. It shows many of the aspects that play a role in the encounter with the New Synagogue Dresden as an out-of-school place of learning and which will be explored here. What is striking is a diffuse lifeworld knowledge with a simultaneous failure to differentiate between different religions, the understanding of symbolism and the double occupation of “Why?” between causal and final cognitive interest. On the one hand, then, the question speaks to the consideration of for what reason, and on the other hand, for what purpose, certain signs and practices occur. After an introduction to the New Synagogue, its potentials for the development of competencies, especially among children and young people, are explored. After that, the focus is on the conditions necessary for its use, and another section deals with the specific difficulties that can arise. The book concludes with a plea for the synagogue as an out-of-school place of learning, also beyond the topic of Judaism.