Last week, we brought you a look at some artists prepping for their window installations for the M/6 phase (curated by Jonathan LeVine) of the ongoing art program for Urban Nation. We now have some in situ pics of the pieces for you to enjoy. Along with the windows from Dan Witz, Jeff Soto, Nychos, Olek and Saner, artists AloONUR & WES21 and CANVAZ were seen putting up their work in Berlin. Also, check out some shots of Olek acting as a lookout for Witz as he glued up his optical illusion street interventions. Photo credit: Henrik Haven.