Stuttgart Electronic Music Festival, known locally as SEMF, has become one of the biggest electronic winter events on the German raving calendar. Taking place at Stuttgart's giant Messe exhibition hall, organisers aim for the vibe of a large summer festival in the depths of winter. SEMF is held in the Winter Indoor Open Air, across with four floors, complete with a chill-out area, rolling lawns, an open air stage, waterfalls and terraces, guaranteeing an open air feeling under one roof.