Office building Baumschlager-Eberle: a building without heating

Source: Detail; photo: Jakob Schoof

The architects from Baumschlager-Eberle have built a very special office building in Lustenau, Austria, partly for their own office, partly to be rented.
Although it was not their intention to build a building according to passive standard, it has become a real passive building, since the building has no heating system (and no mechanical ventilation).
More details can be found in Detail and at their website.