I used to have one of these outside of my house for years, it would make its web in the bush beside my porch. That was a while back before I had my nice digital camera to take a picture of it. I always found them interesting. This is a great photo.
its a wasp spider Argiope bruennichi their nets indeed allways have this unique pattern [link] the german wiki has some better pics: [link] Have seen them before unfortunately with no camera at hand and looked up what it is great photo