This is a little disappointing. We have 11 month kittens, and our boy like to climb up his cat trees and this one keeps tipping over. I bought it for the solid wood, no tip construction, but every day it is tipping over, with a loud crash. The top perch does not stay screwed tightly. Before it even started to get tipped over, it is always moving around. To line it up straight, it either neds to be over tightened or under tightened. It is a little wobbly too. I am sure as it continues to tip over, this will also get worse. It was easy to assemble. Solid.