Check out the stopsignflower to visit the brilliance of this idea. Basically a guy's daughter got a knitting kit, he had to learn how to teach her how to do it. He thought of knitting these "stop sign flowers" and put them up around San Diego.
German artist Jan Vormann travels around the world and restores crumbling architecture using LEGO blocks. In his work titled Dispatchwork, Vormann has spent three years filling in the cracks of buildings with colorful LEGO pieces.
Rain Girl: September by Banksy in New Orleans. Exactly three years after Hurricane Katrina, Banksy showed up in New Orleans. He left his mark around the city, providing stenciled commentary on the post-Katrina days.
Lego Street Art Around The World. This Lego street art works in two ways: one, it makes the grey and boring street more colourful, all the while repairing the crumbling street brick walls. So it’s basically a two-for-one Lego repair.