The City of Copenhagen and HOFOR have collaborated with residents to design a lush and green courtyard that, in addition to handling everyday rain, can also handle a once in a century rain event.

The City of Copenhagen and utility company HOFOR have collaborated with residents to design a lush and green courtyard that, in addition to handling everyday rain, can also handle a once in a century rain event. Rainwater that falls on courtyard-facing roofs and paved areas is held back to form a lake. Water is held in a beautifully designed garden with the lake at the centre. In everyday rain the water will rise for a period, and in high rain events the wall courtyard secures the buildings.