Once you've seen the Cathedral, we recommend walking around it. Start at Carrer del Bisbe (to the right of the church). If you take the first street on the right, you'll run into a beautiful square, Plaça de San Felip Neri. Return to Carrer del Bisbe, turn left at Carrer de la Pietat, and then follow Baixada de Santa Clara until you reach Plaça del Rey, a lovely square worth visiting. Go back and skirt the cathedral along Carrer dels Comtes, arriving at Plaça de Sant Iu, where you can enter the interior courtyard of the Frederic Marés Museum free of charge. There you'll find a very pleasant café where for 1-3 euros you can have a coffee or refreshment.