Barcelona, Spain, modernist architecture, Casa Batlló-inspired, colorful mosaic facade, intricate stonework, wrought-iron balconies, Gothic-style windows, ornate doorways, curved lines, undulating roof, Sagrada Familia-like, Gaudí-esque, narrow streets, Mediterranean Sea backdrop, sunny afternoon, warm light, deep shadows, vibrant city life, street performers, pedestrians, bicycles, historic district, La Rambla views.