The daily contributors to the global warning are Raspazjan + Skount (in Greece) + Kenzo (in Portugal).
Bombastic titles for awesome pieces, here are the latest walls from EVER in Chicago, Arizona, Virginia, Buenos Aires… (+ a few extra photos from Roa in Buenos Aires)
5 Bulgarian trains by Shlomo in 2013 (extracted from the depths of my mailbox)
New Walls from Dot Dot Dot in Norway.