Klaus ausser Haus presents: Helvetia out of control! Together with the 25hours hotel on Langstrasse and Kiki, Klaus is organizing a 1st August celebration full of mischief and surprises. And of course with lots of great music from international and local artists and DJs on two dance floors! And best of all: the whole thing takes place indoors and outdoors. Right in front of the 25hours Hotel Langstrasse in Zurich.