Halloween Underground Cinema at Cardiff Castle is an immersive cinematic experience held in the medieval, stone-vaulted Undercroft. This family friendly activity, by Darkened Rooms, features horror film screenings, spooky decorations, and eerie ambience to create a thrilling Halloween atmosphere for all. The Nightmare Before Christmas (PG, 73 mins) Jack Skellington, the Pumpkin King of Halloween Town, discovers a portal to Christmas Town and decides to celebrate its traditions his own way. This animated classic from the mind of Tim Burton has now been enchanting audiences for 30 years!