When the owners of a rather small plot of land in Central Tokyo approached us to design an apartment complex the discussion on return on investment quickly led to the idea to forget about apartments and to start thinking about parking.A parking tower has the possibility to create on a relatively small plot of land a high return on investment. The idea to make use of the almost fanatical desire to own a car and to take it to the centre of Tokyo (where it needs to be parked). The parking tower with a penthouse at the top is an opportunistic way of living in the centre of Tokyo while using other people's money to pay for the mortgage.At the top at about 17 meters the penthouse is located. The living, dinning corner and two bedrooms face south, looking out onto the Tokyo skyline. On the first floor of the penthouse are the living areas, a small kitchen, a music - study nook and a small roof terrace. The bedrooms and bathroom are on the second floor. On the roof there is space for a billboard which provides for additional funds.