I was in Aveiro early this morning, and I noticed this piece of street art has appeared near the station. Apparently it was created by an Artist called Vhils and is made by hacking away the plaster from the wall to reveal the layers and bricks below.
/ˈsnæp.ʃɒt/ 
A great photo of an incredible piece – the man is a genius!
Many thanks. To be honest I was unaware of Vhils, but checking out his website I can only agree. After I posted I also found a Facebook album of Vhils creating the piece, which is fascinating (https://www.facebook.com/media/set/?set=a.10150836354420848.390659.288335200847&type=1)