#Copenhagen is enlisting an unusual ally in the fight to protect itself from ever-increasing rainfall: its parks. Many of the city’s historic green spaces have been retrofitted with channels, pools, levees and underground reservoirs - such as the neoclassical 1929 Enghaveparken, which now holds 10 Olympic-sized swimming pools of rainwater runoff underground in a hidden chamber. Preparing for and collecting this water has a number of advantages: as well as protecting the city from devastating #fl