In one of his texts about Euro-Islamic architecture, Christian Welzbacher formulated the following: ‘A mosque is no more than a space oriented toward Mecca. Everything else is a product of human imagination.’ This minimalist thesis could perhaps be broadened, and we could add that Islam is not fixed with architectural-liturgical conditioning. Just the space for prayer has to be oriented to Mecca and Kaaba, and this has to be recognized in the prayer niche mihrab.