My Grande Mansion is built and the room sets are in place. It's a system X building which was easy but time consuming to assemble. The walls seem thinner than the previous mansion houses, but once built, the finished item seems sturdy enough. I like the fact it has two balconies but not very keen on the spiral staircases that look like a deathtrap to me. Any klicky who is a bit unsteady on their feet could easily fall to their death on these narrow tread steps and flimsy handrails.