Roof of the Natural History Museum, Vienna

Last night was the 'Lange Nacht der Museen' in Vienna, where all the museums in the city open from 6pm-1am, and for just ?13 you can see as many as you like. One of favourites was the Natural History Museum, partly for the exhibits, but also for the sheer beauty of this amazing building. Here is a photo of the beautifully patterned roof, my favourite of the ones I took :)