But Barcelona has plenty of other attractions. Seen here, the colorful glass dome of the city's Palau de Musica. Thanks for the tip to visit this gruezi! We skipped the famed Sagrada Familia, BUT are happy to pass along the following logistical tip for those interested in seeing it from nearby. Both the Colon plus the Sercotel Rossello hotel roof terrace cafes offer excellent views. Reserve ahead.