Wired UK has the story of a German artist who has been fixing walls with Lego patches around the world:
His “Dispatchwork” began in 2007 in the small village of Bocchignano, Italy, as part of the contemporary art festival 20 Eventi. Developing the work in situ, he became intrigued by the makeshift repairs that had been made to the crumbling walls. The approach favoured function over appearance, reminding Vormann of the haphazard Lego designs created by children.
Check out the artist’s website, which has photo galleries based on location: www.dispatchwork.info