(2) Ticket price - "18 Euros for adults (Barcelona Card holders can enjoy a 20% discount on adult fares); 11 Euros for students, retirees and minors; strongly recommend that family tickets be purchased by four-person team (no need to provide proof of relationship) that is, 50 Euros for four people = 12.5 Euros for adults, which can save 5.5 Euros per adult. The family ticket pattern is shown in the figure below. If you like music and have plenty of time, you might as well buy tickets for evening concerts (almost every day), while enjoying music, you can also visit the whole building. Sometimes you can find concert tickets that are more favorable than admission tickets.