Between Hotel Sofia and Camp Nou you can still find the old villa of La Masía, the former head quarter of FC Barcelona's famous academy. It's a beautiful old building which you can't access, but you should still walk along, given the historical significance of the place. The sculpture garden is beautiful, the Catalan flag is waving proud and the old iron gates just breathe history. Also cool: the former, nearly antique team bus in the front yard.
Please note: Since 2011, Barcelona's youth doesn't play here anymore. They have moved to the De jeugd van Barcelona speelt hier sinds 2011 niet meer. They train and play at the new Ciutat Esportiva Joan Gamper, a giant modern training complex, eight kilometres west of Camp Nou. There is a 'La Masía' as well, but it's a contemporary accomodation for youth players, built of glass.