Useless idea in Genoa, Italy.
3 german trains by Shlomo in 2013 (extracted from the depths of my mailbox)
Bien Urbain 2012 in Besançon/France started yesterday. Here is one wall SAM3 has painted for the event. You can also check last year festival photos.
2 new walls from Fabio Petani: Cuprum and Helium.