I was told that this is Hermione and Victor Krum are in the sky, but I didn't see that. However, there is something SUPER creepy in the sky. Once you get to the street view, look in the sky to your left.
the alternian alphabet is on mspaintwiki and if you do write in it you write backwards. if you were to write abc, you would write it backwards like cba (It's actually the Daedric alphabet upside down, but this is useful nonetheless)