An interesting idea of interaction with the urban environment was proposed by American designer Candy Chang. In various places in Chicago, a large canvas is placed on which one repeated phrase is written - “Before I Die...”
Then anyone can take a chalk and finish this phrase. Share your desires, fears and plans.
Within a couple of days of the project, about a hundred people took part in it.
In principle, the idea is cool. Moderately motivating and simply interesting. In general, the theme that people can not only be in an urban environment, but also interact with it is cool in itself.