. Universal Studio's Diagon Alley is loaded with nod to the Harry Potter books and movies, and it may be impossible to see them all in one visit. But we've compiled a list of 5 things to keep your eyes open for during your next (or your first!) visit to Universal's newest addition to their wizarding world. . . .   . 1. The Makings of a Magic Wand If you find yourself wandering by Ollivander’s Wand Shop in Diagon Alley, take a moment and peek into the windows along the street...