We had returned to the Christmas market at the basilica to see it with the church lit up at night. I was busy photographing it, when suddenly the bells tolled and the lights went out. We couldn't believe they would turn off the lights with the market in full swing and all those people there. Then, they started a light show on part of the facade accompanied by music. Turns out that every time the bells tolled, the same thing would happen, so twice an hour light shows all evening long.