check this out! The inside is hollow so they can climb from "branch" to "branch". The opening at the base does lead to the lower branch but the gap is a little bit too small for my fatties, so Toby just curls up in there and sleeps. He also likes the top as you can see:)
http://i3.photobucket.com/albums/y77...oc/tree001.jpg
it's 45 inches tall and I got it at BigLots for $118. Cat furniture is expensive anyways, but this one is really sturdy and the cats love it.
http://i3.photobucket.com/albums/y77...cattree018.jpg
please excuse the crappy pics. This new camera takes awesome pics outdoors but inside they're all funky and discolored.:(