Everything on this 53.5-in tower is sized up: the top perch measures 21.5 by 18-in, the condo is a 19-in square with 14.5-in of headroom inside, and the base spreads a full 23 by 23-in under a 49-lb frame. That combination suits a long-bodied breed that overhangs a standard perch, or two cats that sleep touching. The condo uses a fence-style rail so whoever is inside keeps a view out, the top perch rides on 4.5-in of sponge, and every cushion detaches for cleaning.