Universal Orlando is adding a really cool Sound and Light Show at Hogwarts Castle.   The Nighttime Lights at Hogwarts Castle will debut on January 31 and run on select nights throughout 2018 (after a preview this week-end at A Celebration of Harry Potter 2018).  As night falls in The Wizarding World of Harry Potter-Hogsmeade at Universal’s Islands of Adventure, state-of-the-art projection mapping, coupled with special effects and lighting, will wrap Hogwarts castle in a display celebrating the four houses of Hogwarts—Gryffindor, Ravenclaw, Hufflepuff and Slytherin. Watch as the spirit and iconic elements of each house are brought to life on the majestic castle all set to music based on the original scores from the Harry Potter films.