The caption above might not mean much unless you were brought up Catholic like me. A plenary indulgence was something of great value. Rather than going into theological arcana here you can check the link if interested.
But Catholics have a wonderful concept of absolution - do this, think that, and all your sins are washed away. I didn't pay attention to the business under this awning - it could have been a bar or ice cream shop - because the concept on the awning was so good, sort of a spiritual Groundhog Day. Do all the nasty you want, come in here and emerge in saintly white.