One of the favorite things to do in Barcelona at night is to watch the Magic Fountain of Montjuïc, at the beginning of Avinguda Maria Cristina in the Montjuïc neighborhood. 

The large Art Deco fountain, erected in 1929, delights all ages with its light and water shows choreographed to music. It was designed by Carles Buigas for the 1929 International Exhibition, which took place in Montjuïc. The show lasts for about an hour.