Wind load is a critical factor that must be taken in consideration when designing structures, especially tall buildings. The magnitude of the forces caused by wind varies depending on multiple different parameters, one of the most significant is the geometry of the building. This thesis explores and compares the impact of wind loads on buildings with different geometric shapes, a square building and a cylindrical building. The study also focuses on the existing high-rise project called Stadsljus, which has a more complex and unique geometry. For the square and the cylindrical building, the wind load was calculated using the standard formulas that are provided in the Eurocode. In contrast, the wind load on Stadsljus was determined through wind tunnel testing, allowing for a more detailed and site-specific analysis.After calculating the wind loads, a comparison was made between the magnitudes of the loads acting on each building and between the two different analysis methods—Eurocode calculations and wind tunnel testing. The results clearly show that building shape has a substantial influence on wind load behaviour. According to the Eurocode calculations, the square building experiences up to 72% higher wind load compared to the cylindrical one. The wind tunnel analysis of Stadsljus shows that its wind load lies between those of the square and cylindrical buildings—higher than the cylindrical, but lower than the square.These findings highlight the importance of considering geometric form early in the design process and demonstrate the limitations of simplified code-based methods when applied to buildings with complex shapes. Wind tunnel testing can provide more accurate and reliable data for such cases, supporting better-informed design decisions.