After the snowfall on Friday (and an evening session on the indoor trainer) I wanted to go and take pictures of the Library with the fresh white blanket, but unluckily by the time I arrived the square was fully occupied by students and buses preparing to leave for skiing holidays :S So I went back on Sunday evening after sunset, to take high dynamic range (HDR) pictures in the blue hour (when the sky is still dark blue deep into the evening twilight). Now I was successful, I think these pictures are close to perfect :)