Tavern "?" (Also Cafe "Question mark" / Tavern "Questionnaire") is one of the oldest houses in Belgrade and the oldest preserved Belgrade cafe. It is located in Kralja Petra Street no. 6, in the former main stash. The building has the status of a cultural monument, and with its almost 200 years of age it represents one of the best features of the city.
The house where Kafana is located "?", the order of Prince Milos, he built in 1823, Naum Ičko, the unemployed, the commercial consul, and the son of Petar Icka, a patriotic trader of Cincar, one of the main organizers of the First Serbian Uprising and the creator of the Icko Peace, concluded with Port 1806. This peace created the conditions for the formation of a new Serbian state. Petar Ičko was a commercial consul in Belgrade, and this title - during the time of Prince Miloš - was transferred to his son Naum. Because of the status that included economic power, the opinion of the said house was owned by Naum Icka. However, after his death in 1827, by insight into his property, it became clear that a man with such high moral attitudes and at the work he was doing could not afford himself a house in the Main Chassis. The house was still the property of Prince Miloš Obrenović. Later (1826), the Prince donated the building here to his personal doctor Ećim-Tomi Kostic, the son of Naum Icka (Turkish doctor), for merits during the Second Serbian Uprising (in the treatment of wounded and sick alone). Echim-Toma took advantage of a good position and turned the house into a tavern.