I really like this photo, but the colours feel either too heavily shifted or over-saturated; I think the heaviness of the blues and greens really overpower it. It's a gorgeous scene though, and the picture is well composed. 6
The building is attractive, but I think that it needs a person or two inside to make it more interesting. Since the architecture is fanciful and the topic is blue, perhaps a fleeing Cinderella and a companionless Prince Charming would be in order.