This thesis explores the concept of tactical urbanism. Tactical urbanism is an approach to urban space planning that focuses on quick, temporary, and low-cost interventions. These interventions allow local communities to test new ideas and solutions without long-term commitments. The aim of the paper is to demonstrate how tactical urbanism can improve the quality of life in urban environments. The paper begins with an analysis of the history of urbanism and its classical approaches. The second part explains the development of tactical urbanism and its advantages, such as flexibility, community involvement, and the ability to respond quickly to needs. The paper also explores examples of tactical urbanism in global cities, including the High Line Park in New York and parklets in San Francisco. The paper also examines how tactical urbanism can be applied in cities like Zagreb. These applications include the creation of new pedestrian zones and temporary bike lanes. The paper emphasizes the importance of collaboration between citizens, local authorities, and nongovernmental organizations in order to achieve successful tactical interventions. The conclusion highlights that tactical urbanism can significantly contribute to the revitalization of urban spaces. This approach enables communities to take control of their surroundings. It also encourages creativity and innovation in urban planning. Such projects can lead to long-term changes that improve the quality of life for citizens.