The Urban Art Festival Knoten.13 went down october 11th to october 13th in Hamburg with participating artists such as 1010, Base23, Doppeldenk, Alias, BuffDiss, Mein lieber Prost, Zipper die Rakete and many more. Have a look at some photos of the exhibition and outdoor sessions with 1010 and Zipper, if you want to see more photos checkout their facebook!