The kids got the great hall for Christmas and I picked up the Whomping Willow set to join onto it. We still felt it was missing something so I built on a few extension pieces. I have to pick up some more tan pieces though as I've very few. Bricklink order soon :) Anyway, I thought a library would be hand for Harry to wear his invisibility cloak. Decided to use a few old letter bricks instead of the new letter tiles to give tha ancient look. A black tower was added to give Snape a potion room with a trap door to the chamber of secrets (not quite cannon) and some wizard chess. Its amazing how some many Ninjas have recently occupied it though ...