Just a year after the flood, city officials adopted a " Cloudburst Management Plan," a $1.3 billion public works project to complete 300 flood-mitigation projects over two decades.

Just blocks away from the Kalvebod Brygge tunnel is Enghaveparken, a century-old park that was redesigned after the 2011 flood to transform into a massive reservoir in the event of heavy rain.

Just blocks away from the Kalvebod Brygge tunnel is Enghaveparken, a century-old park that was redesigned after the 2011 flood to transform into a massive reservoir in the event of heavy rain.