The construction of information urban space allows effectively improve the management quality and the sociocultural development of cities. In this paper the concept of Sociocultural Information Urban Space considered as logical development both Smart city infrastructure and social machine concepts, proposed for studying and understanding the features, possibilities, base information flows of the smart city sociocultural face. The Sociocultural Information Urban Space idea helps to recognize or improve the ordinary data driving city concept because of smart and gamification technology use so that greater range of digital services related to the sociocultural city facets can be provided to different stakeholders. Suggested smart city architecture, models, as well as St. Petersburg cases illustrate the approach, structure, and core implementation steps of the urban space. Two application scenarios allow discussing how processes of sustainable development and self-regulation mechanisms of Sociocultural Information Urban Space can be used to meet the factual needs of citizens and decision-making.