Montserrat is a working Benedictine Monastery and one of the highlights is going into the church. Our tour bus was late so I only had a few minutes to snap photos before we were locked out for church services.
Since Mass was about to start we were lucky enough to hear the pipe organ being played for the worshippers as they entered the church. It was one of the most beautiful free concerts I have ever heard in a church.
I wanted more time but we got kicked out. If you go, the church is closed from 10:30 to 12:00.