Barcelona, Gaudi architecture tour, Sagrada Familia, Park Güell, Casa Batlló, La Pedrera, curved lines, intricate details, vibrant colors, ornate facades, mosaic benches, twisting columns, hyperbolic arches, stunning stained glass windows, grand staircases, imposing doorways, warm sunlight, Mediterranean atmosphere, tourists walking, camera close-up, wide-angle shot, dramatic lighting, architectural photography.