I have been thinking of witnessing the unfinished construction site for more than 100 years, one of Barcelona's most famous attractions. Do your homework in advance, make an appointment online, and come according to the time of the appointment. Originally also made an appointment to climb the tower, but unfortunately closed that day, although with a little regret to visit the entire Sagrada Familia, but had to be shocked by this building, too admire Gaudi, and hope that future generations can let it be completed as soon as possible.