The Valley of Jizerský brook in Liberec suffers from unpleasant warehouses, non-functioning and dysfunctional buildings. After their reduction, we will get a beautiful green valley near the city center, from which we can make a city park. After uncovering the creek, I create a small pond in the middle of the park. I delete the existing path and instead of it I build a pedestrian bridge that connects both sides of the valley and ends in the parter of new residential homes. They complement the construction and determine boundaries. Around the pond, there are cubes in which something can happens, in summer or winter. Island of relax, children's play and nature. I see it from the tower in the middle. Transparent polycarbonate facade makes buildings lightweight. They communicate with water vapor, which is created in the morning above the surface of the pond.