Outside view: idyllic postcard motif. Behind the scenes, an alternative network of artists opens its doors. The Heidelberg Castle is one of the most popular sights in Germany. Heidelberg’s dollhouse-like Old Town has become a romantic destination of yearning. But what does it look like apart from the well-known clichés? “Metropolis” visits the city on the Neckar River and talks to hiphop legend Toni L., publisher Manfred Metzner and artist Cholud Kassem.