Architectural historians have always seen the Islamic city and Islamic house as unsystematic in design and layout. In this work I show that there is a basic spatial symbolism predating, and then adopted by, Islam, based on three major concepts. The first is that there is a residual notion of center as something sacred; secondly that instead of dichotomies or binary oppositions space in Islamic architecture is a continuum and lastly that the center of the center, whether or not it has any visible symbolism, (fountain for example) is an axis mundi, or vertical axis to the heavens. These features are seen not just in urban and housing designs, but also in mosques, madrassas, and garden layouts.