In his „Danzig Trilogy“ the Nobel Prize winner Günter Grass describes places of his hometown, how they used to be before the second world war. With the G:RASS-app the city gets surrounded by this passages. Protagonist is a dog, who is also important in the work of Grass. When you wake him up, he leads you to the certain places in the city. When you reach one place, opens the augmented-reality-function. You see your surrounding, but also illustrations and pictures. The real and virtual worlds connect, so you can see the city from the eyes of Günter Grass and get to know more about the history of Gdansk. The little details make the app special. Discover them by your own.