Калемегдан
For decades, a long tunnel has been proposed in the ending section of the street. It would follow the route of the Pariska Street, between the streets of Gračanička and Uzun Mirkova, allowing the ground level to be turned into a plateau with a fountain. This extension of the Knez Mihailova Street would create a continuous pedestrian zone from the Terazije, Republic Square and Palace Albania to the Kalemegdan Park, the Belgrade Fortress and the rivers. It was envisioned by the first phase of the planned Belgrade Metro, 1973-1982.