Transform the open plaza while maintaining the existing "Bar Celona" café area, metal tower structure, and U-Bahn entrance. Add a multi-purpose sports court (15x20m) with shock-absorbing rubber surface in the underutilized space to the right, bordered by modern glass-panel windbreaks (2.5m high) that create openness while providing shelter. Install 3 rows of amphitheater-style seating (wooden benches) facing the court, integrated with LED strip lighting underneath. Position 4 weatherproof outdoor fitness stations along the perimeter. Enhance building facades with vertical gardens and modern architectural lighting, keeping structural elements intact. Install 6 smart LED poles for evening illumination and occasional event sound system usage. Maintain all existing pedestrian pathways, vendor locations, and palm plantings. Replace current metal railings with glass balustrades to improve visual connection. Style: Photorealistic visualization with accurate lighting, maintaining current camera angle and perspective, emphasizing the integration of modern elements with existing infrastructure.