Painting Ireland 4, What's wrong with this picture?

Grattan Bridge, Dublin, watercolor, 11x15 inches

This is another image of Ireland, but unlike previous posts, this was painted back at home, not during my trip. This was the evening of St Patrick's Day, and I was strolling around Dublin with friends. I took a reference photo of Grattan Bridge just before we headed to the Porterhouse Pub for live music and a pint. It was cold at the time and the sky was still bright with a soft glow, but back at home I decided it would be more interesting to make it a rainy day. This was painted on Fabriano Artistico Cold Press paper, with Schmincke and Winsor & Newton colors.

After I had finished the painting, I noticed a serious factual error (my apologies to Dubliners for it). Of course I took artistic license and modified a lot of things, simplified details, added elements from imagination--actually the entire effect of the rain was imagined--but there is one thing that is completely wrong and not intentional at all... Let's make it fun: I'll give people a week to view this and maybe leave a comment with the solution, before I post a detail picture with the explanation.