Knez Mihailova Street, (, officially: ), is the main pedestrian and shopping zone in Belgrade, and is protected by law as one of the oldest and most valuable landmarks of the city. Named after Mihailo Obrenović III, Prince of Serbia, it features a number of buildings and mansions built during the late 1870s. One kilometer long Knez Mihailova Street was protected in 1964 as the spatial cultural-historical unit, the first cultural monument of that type in Belgrade. In 1979 it was elevated to the Spatial Cultural-Historical Units of Great Importance, and as such is protected by the Republic of Serbia. History Roman period The street follows the central grid layout of the Roman city of Singidunum, as one of the main access roads to the city corresponds to the modern street today. Ihe main axis of urban development was along the street, which was the main route of communication (via cardo). The original earthen and wooden fort stretched around the Studentski Trg and Knez Mihailova Street. The oldest Roman graves were discovered in this section, dated to the 1st and early 2nd century. Thermae were located in the Čika Ljubina Street. Also in the Čika Ljubina, remains of the house from the 4th century was discovered in 2008, which included the part of the floor and doorstep of the main entry door. Parts of the walls were decorated with frescoes. An aqueduct was used to conduct water from the modern Kumodraž area. At some point it was joining the aqueduct from the Mokri Lug and then continued further to the castrum. Both Mokri Lug and Kumodraž are hills, so the natural inclination allowed for the water to flow downhill to Singidunum. Aqueducts passed through the modern center of Belgrade, Terazije, and along the Knez Mihailova. When digging for the future Rajićeva shopping mall began in 2004, remains of the antique and late antique layers were discovered, so as the remains of the southwest rampart route and double trench in the direction of Kralja Petra Street. The trench from the 3rd century was buried and full of coins, lamps, ceramics and jars. Next to this locality, at the corner of Knez Mihailova and Kralja Petra, an area paved with the cobblestone dating from the 2nd century was discovered. It was a public space, located right before the entrance into the fortress. During almost every construction in Knez Mihailova and the neighboring