This all-in-one center for scratching, playing, and napping is every cats dream! The durable woven sisal roof is great for scratching, the spring-action mailbox and birdhouse are great fun, and the inside is perfect for napping and hanging out. Fully modular - easy to assemble with no screws or tools. Solid wood construction. Click the Larger Photo button above for a better view. The ultimate kitty castle!