This is a very solid and sturdy cat tree.  It does not move even when a cat jumps from floor or furniture to top level.  The height pleases my cats.  It is big enough for my 2 male cats (12-14lbs each) to snuggle together on top or bottom level.  They use all levels and spend about 13 of their day using this tree.  The photo does not show whole tree, but does show you the height clearly as it is near the doorknob.