As the world’s architect lovers gather in Berlin for a second year, celebrating the tenth annual World Architecture Festival (WAF), world-class speakers and award-winning firms join them to discuss issues around the theme of ‘Performance’. Like every year, the programme will include speeches, discussions, debates, exhibitions and social events, alongside the prestigious competition and awards ceremony, where some of the world’s best architecture from the year that passed will be celebrated. The festival, which this year takes place at Arena Berlin, a converted 1920s bus station in Treptow, former East Berlin, is the largest international annual architecture festival in the world.