Sound as an architectural material is one of our most copious and yet systematically ignored design materials worthy of exploration. If it is addressed, architecture seeks to silence the sound it encounters: it blocks our aural connection to the next room, the next building, and the outside world. This project imagines what it would mean to listen through walls, to gather information about nearby spaces with our ears and finally what it would mean if that acoustic experience could be understood to be aesthetic.* *This dissertation is a compound document (contains both a paper copy and a CD as part of the dissertation). The CD requires the following system requirements: Windows MediaPlayer or RealPlayer.