Vast, varied Sarrià-Sant Gervasi has a mix of urban tapas bars, brand-name boutiques, and hillside nature walks at Vallvidrera Reservoir. A funicular railway ascends to Parque de Atracciones, with old-fashioned thrill rides and panoramic views on Mt. Tibidabo. Bellesguard is a medieval-style turreted mansion designed by Antoni Gaudí, and the modernist CosmoCaixa museum houses a planetarium and indoor rainforest.