Become a real wizard by rebuilding your very own School of Witchcraft and Wizardry! Hogwarts - Great Hall, an 850 pieces 3D puzzle from Wrebbit3D™, is part of a unique and exclusive Harry Potter Hogwarts Collection and includes famous buildings of the beloved World of Harry Potter. Combine the 2 puzzles from this unique Harry Potter Hogwarts Collection (Great Hall and Astronomy Tower) and get a 3D puzzle of Hogwarts Castle of 1 725 pieces. Assembled Great Hall 3D puzzle: 20" x 15" x 19". Wrebbit3D™ puzzles are the largest and have the highest piece count of their kind. Snug and tight fitting pieces that are easy to handle. They are the sturdiest 3D puzzles on the market. Highest quality of design and illustration. Made in Canada from non-toxic polyethylene foam.