Barcelona, Gaudi architecture tour, Sagrada Familia, Casa Batllo, Park Guell, mosaic benches, intricate columns, ornate facades, spiral staircases, stained glass windows, colorful ceramics, monumental doors, grand halls, vaulted ceilings, Gothic Revival style, curvaceous lines, organic forms, vibrant colors, sunny day, clear blue sky, warm light, low-angle shot, wide-angle lens, symmetrical composition, dramatic shadows, high contrast, HDR effect.