Chalk in Berlin..!
Berliner Sparkasse chalk drawings on street stones..! Draw your own Berliner chalk drawings..!!

Solution

...The idea is locating Berlin city spots (squares,pedestrian areas,etc) , provide people of all ages with chalk and urge them to release  their creativity on stone canvas!!..

It is time for people of all ages to come together! Parents collaborating with their children, artists expressing their creativity, friends having fun with each other. Through this interactive procedure, people relax, create, bond with each other and with their city...as they are giving Berlin colour,shape and vibrancy!!