My two girls couldn't wait to climb all over this thing and once I had everything out of the box and started to put it together, I couldn't believe how quickly it was done !  The first thing Lilly did was lay up a great big stretching scratch on the longest sisal column and her little sister Bobo hopped up and climbed into the covered nook to peer out the window. They both fell asleep on it too.  Today is their first alone with it so I can't wait to see what they're doing when I get home tonight.  Thanks for manufacturing a quality product at a fair price with easy to follow instructions ANYONE can assemble in no time flat. If the kitties had opposable thumbs they could've done it themselves (almost ;.) !