Force4 Architects has been asked to design the extension of the existing rainwater reservoir in the townpark of Taastrup. With the extension of the rainwater reservoir, the current green areas will shrink drastically and therefore alternative thinking concerning sports- and culture facilities is required – as e.g. placing program on isles on the lake. Special focus also lies on safe and understandable circulation, since the townpark connects the railway station and Taastrup's theatre.