Across town, 50 Bugginger Strasse is the address of one of the city’s most ambitious rejuvenation projects. The 16-storey high-rise looming overhead appears unremarkable, with its mixture of green- and aqua-panelled external balconies the only eye-catching elements. But Philipp explains that this is, in fact, the world's first passive energy high-rise, in which heat is produced from internal appliances, body heat, and things like lightbulbs rather than conventional heating systems.
