The project Der Marienkäfer is an outdoor swimming pool in Donetsk, which intends to open up one of the surrounding lakes for the locals. The structure will be situated directly in and above the water surface, thus the construction should be as compact as possible while maintaining maximal water surface. A new terraced landscape is planned leading straight towards the water, hiding and encompasing all technical facilities underneath. „Der Marienkäfer“ got his name after its winter coat which protects the terraces from the cold and create a unique space for a sauna and wellness place. This cover will look like a torch on dark winter days and its transparency will preserve the visual contact between the in- and outdoor landscapes.