I just came across the website of that guy who does the 3D street art. He’s got a few new pieces on there and it seems that he is tackling a whole new scale. This stuff is very clever and excellently executed.
This page that includes a few of the images (the official page is quite rubbish).
His name is Edgar Mueller and he’s from Germany. He’s been producing street art for decades. It seems there is a whole street painting community because he was awarded the maestro madonnari’ (master street painter) at the world’s largest street painting festival.