 In April 2016 a controversy started about buildings that were suddenly demolished overnight in Savamala.It is believed that this happened in order to make space for an Arabian-financed project on the Belgrade Waterfront.The idea of digging a tunnel which would connect Belgrade's section on the Sava slope with the area on the Danube slope existed since the 1867. , the first trained urbanist in Serbia and author of the first general plan (GUP) for Belgrade from that year, was the first to propose this tunnel.