 Majority of boulevard's course is part of the “Ancient Singidunum” archeological locality.Singidunum's castrum occupied part of today's Belgrade Fortress, but the civilian zone spread from the Kralja Petra Street, over the both Sava and Danube slopes, till Kosančićev Venac, extending in a series of necropolises from Republic Square, along the Bulevar kralja Aleksandra all the way to the Mali Mokri Lug.During almost every construction downtown where digging is involved, more remains are being discovered.