The Art House Tacheles used to be the epicentre of the alternative art and culture scene in Berlin, an impressive five-storey building in the heart of the capital dating back to 1908 and occupied by artists after the fall of the Berlin Wall. For Oliver Putzbach, a 52-year-old Berlin native who used to live nearby, Tacheles' transformation symbolises that of the capital itself. While its economy grows and investment capital pours in, long-time residents like Putzbach fear it is losing its edgy character and bohemian charm that had its former mayor famously declaring over two decades ago that Berlin was “poor but sexy."