The house, which stands on the Â̲èÖ±²¥ site at City campus, is open to the public and offers an educational space as a new design tool. The house includes peepholes where you can see the materials used in its construction, including 20,000 toothbrushes, two tonnes of denim jeans, 4,000 DVD cases, 2,000 floppy discs, 2,000 used carpet tiles (used to clad the external walls) and 500 cycle inner tubes.