Onkel Dose originally had a graffiti shop in Cologne-Ehrenfeld, where street artists bought their materials. But he also always worked on the side as a street artist. Due to the increasing professionalism and demand for graffiti orders, workshops, advertising painting and facade designs, the core business of art on order developed over the years. He gave up his graffiti shop and now only works to order. This turtle can only be viewed when the bar behind the gate is open.