Once you've eaten and had a rest, we suggest changing neighbourhoods. If you go by bike, follow the seafront promenade to Port Olimpic. Right before the towers is the beginning of a street with a bicycle lane that runs up to Sagrada Familia (Carrer Marina).
If you take public transportation, return to the beginning of Barceloneta and take line 4 towards Trinitat Nova. After 8 stops, get off at Hospital de Sant Pau. This hospital, designed by architect Lluís Domènech i Montaner, is one of the grandest examples of Catalan art nouveau. You can admire it from outside or by walking around its buildings.
From here, descending Avinguda de Gaudí, you'll reach Sagrada Familia in 15 min, with great views of the church as you get closer and closer.
