Ah well good job for timing it right, I know sometimes a skill in photography is seeing a subject or scene and knowing that a different time of day would be better for the light, then waiting or coming back.
Even though it could also be seen as "readymade" I really wish you had entered the one looking up at the tower in Florence from within the courtyard, as I doubt as many people would think to create that composition. The battlements make it look like a postage stamp for a neat effect.
Thanks man. I'm glad you like that shot. Wish I had made it my top 3! Also, it's super helpful that you're articulating all the pros and cons of the challenge in these comments.
On the courtyard image... I'm actually putting together an album of "Looking Up" where you get a lot of those postage-stamp-style silhouettes. Keep an eye out ;)