Coolsingel  Coolsingel is one of the best known streets in central Rotterdam. It is located in the Cool district. The street leads from the Hofplein to the . Plans were announced in 2016 to reduce traffic congestion on the street. The redevelopment is expected to cost 47 million euros and to be finished by 2020. The canal which ran down the street was entirely filled in between 1913 and 1922.