This kitty condo is easy to assemble and you can configure it into a variety of designs, it can also be expanded upon with additional kitty city condos and parts. all of my cats really enjoy climbing all over it they range in ages and sizes, it has withstood a lot of use over the past few months. However you do need to perform routine upkeep on it as the various pvc joints do come loose and the pipes do become separated from time to time. it is easy to slip them back into place though. Overall my cats love this condo I like how it can be assembled into a variety of designs.