Knez Mihailova Street or Prince Michael Street, properly Kneza Mihaila (Serbian: Улица Кнез Михаилова (Улица Кнеза Михаила), Ulica Knez Mihailova, (Ulica Kneza Mihaila)) 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 in 1979 included on the list of Spatial Cultural-Historical Units of Great Importance, and as such is protected by the Republic of Serbia.
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. During Ottoman occupation, in the first half of the 16th century, the Ottomans repaired the old Roman aqueduct and built a new one along the street with drinking fountains, as the neighborhoods could not develop without the water. They also built gardens and five mosques with adjoining mahalas. When Austrians occupied Belgrade in 1717 they demolished the old houses and mosques and built new buildings.
In the middle of the 19th century, the upper part of the street bordered the garden of Knez Aleksandar Karađorđević. After the implementation of the 1867 city of Belgrade regulation plan by Emilijan Josimović, the street soon gained its current look and architecture. Josimović’s plan marked the beginning of the city’s broader metamorphosis from oriental to the western urbanism. Prior to Josimović, only a short part of what is today Knez Mihailova, called ″Delijska street″, actually existed as a street. Works on construction of the new street began in spring of 1869.
Houses were built there by the most influential and wealthiest families of the Serbian society, most of them merchants. In 1870, two years after the assassination of Prince Mihailo Obrenović, the city authorities officially named the street - Ulica Kneza Mihaila (Prince Michael Street) instead of ″Delijska″. In the late 20th century, from mostly shopping area it evolved into the cultural center of the city.