The Danube Canal was already a summer-time party hotspot but Grelle Forelle has taken it to an entire new level, single-handedly taking the upper-crust Viennese nightlife scene and vigorously shaking it until it’s back to being a scruffy, young party-mad lil’ upstart. Grelle Forelle abandons all pretence. No photos, no guestlists and definitely no private tables. Instead, a soundsystem of eardrum-perforating strength, maximum cred lineups and a committed crowd going long and hard. Who said Vienna was just about sophistication?