Bought 2 of these. Pretty easy to assemble. Did it in under an hour each. Did it in the best building environment possible: a small room with 6 hyper active kittens to help! Between step 5 and 6, I added about a quarter ounce of cat nip to the room to enhance the experience. The instructions didn't have that suggestion but I think it should. Needless to say, every step was properly scrutinized and approved by the Kitten Kommittee! Font on instructions needs to be much bigger but pretty good instructions. Packing Box was very appreciated also! Thanks!--The Kittens! Nice cat tree for the money. Well designed and plenty sturdy. Kittens are loving it! Photos show dedicated helpers.