The Catalonian Music Palace, though not Gaudi's work, is also the work of another master, Montanell, and is listed as a world cultural heritage. Colorful mosaics and sculptures are the main features. The ceiling of the concert hall is very atmospheric, colorful and as gorgeous as kaleidoscope. It is recommended to book tickets online in advance if there is a designated opening time. In addition, near the Catalan Music Palace is Barcelona Cathedral, which you can visit when you have time.