My first question happened to be whether this was some kind of an art or a campaign to ride more and more bicycles. Although it might look like an art with innumerable circles but actually it is a strategy to sell bicycles. Instead of an indoor display this shop in Altlandsberg, Germany uses the idea of simply mounting them on the exterior wall of the shop, without the need of any signboard. Needless to mention that it would definitely attract onlookers and the attention it requires for good sales.
The display has about 120 bicycles and at the window is the co-owner of the shop, Christian Petersen.
[source : flavorwire.com]