The painter Peter Paul Rubens was a native of Antwerp. In the nearby Cathedral of Our Lady, two Rubens triptychs are featured.
Did I do something with Photoshop to turn the sky white? No. It was a VERY cold and overcast day earlier in April. In fact, it was a very cold and overcast week. Somewhere I heard that the temperatures were lower at that time of year than they had been in 160 years. No wonder the Netherlands and Belgium had no tulips.