The Study on Urban Ventilation Corridors and the Impact of Tall Buildings (hereinafter referred to as the Study) is an integral part of the Green Action Plan (ZAP/GCAP) adopted in June 2021 (Official Gazette of the Sarajevo Canton, No. 25/21). The main objectives of the Study are: conducting an analysis of the possible impact on air flow and quality throughout the Sarajevo Basin by establishing new ventilation corridors, identifying areas/corridors where the construction of tall buildings should be restricted in order to improve air flow and quality throughout the basin. The study was conducted in the entire Sarajevo Basin using computational fluid dynamics (CDF), with GIS and meteorological data used for terrain and weather modeling. Taking into account the dominant east-west air direction, the Study identified two main ventilation corridors: - Miljacka Corridor - defined by the flow of the Miljacka River, extending from the east from the place where the Miljacka River enters the city (at Bentbaša) to the western part of the city where it forms a meander (at the Halilovići location). - Main Road Corridor - formed along the main road connecting the eastern and western parts of the city, extending from Marijin Dvor in the east to the Stupska Petlja location in the west. In addition to the two main corridors, additional ventilation corridors were identified at the local level: - Southern Longitudinal (defined by the following streets: Zagrebačka, Grbavička and Zvornička), - Northern Longitudinal (defined by Ante Babića and Ive Andrića streets) and - Alipašina Street, which is located within the green belt. With the aim of protecting the existing routes through which the corridors are supplied with air, as well as preventing the negative impact of new buildings on the air flow in the corridors, the Study recommends measures to protect ventilation corridors and measures to improve the ventilation characteristics of the Sarajevo Canton.