Posted in: Collectibles, LEGO | Tagged: harry potter, legoHarry Potter Returns to LEGO with New Mini Hogwarts Castle SetGet ready to accept your letter to Hogwarts — LEGO is back with a new Harry Potter Mini Hogwarts Castle set. Article Summary LEGO Harry Potter returns with the Mini Hogwarts Castle, a 700-piece microscale set packed with wizarding detail. The LEGO Harry Potter Mini Hogwarts Castle is expected to release August 29, 2026, for $39.99. Say hello to the new Harry Potter Mini Hogwarts Castle set, which comes in at 700 pieces and, when fully built, measures 5.5 inches tall, 5 inches deep, and 6.5 inches wide. LEGO Harry Potter – Mini Hogwarts Castle"Magic fans ages 10+ can conjure up their own school of witchcraft and wizardry with this LEGO® Harry Potter™ Mini Hogwarts™ Castle (40975) building set.