Augmenting cityscape

I had the inspiration for the subject of this post this summer, while having a walk in Milan with a friend. As we passed in front of the XIV century Sforza Castle (italian: Castello Sforzesco), we noticed it was lit by coloured lights, which gave it a quite peculiar aspect. Castello Sforzesco by night. Photo by –Nick– on Flickr The most notable aspect, however, is that the colour of the light can change over time (this is what is called dynamic lighting): the following time I was in the square in front of the Castle, it was lit by purple light.