While walking around Montreal I noticed a building in Chinatown and another building near Fantasia Fest at Concordia University where an outside wall was undergoing some type of renovation. On my next trip I'll look to see if the work is finished and take more pictures.
The dark yellow side of this building in Chinatown looks very tactile.
Unfortunately the construction site wall prevented me from getting really close and I don't think I could jump high enough to touch it anyway.
Looks like the orignal building is being exposed.
A larger view. Looks like a building on the side of a building.