This is a sturdy cat tree, easily assembled, and the cat likes it. The only drawbacks are:
1. The top most perch is a little too high for the cat to look out of the window. He likes the platform one level down.
2. The assembly instructions should tell you to assemble the rectangular "house" on the base before attaching the two posts, since the best way to attach the "house" is when the base is on top of the house (i.e. the assembly is upside down).