I have two kitty cats who have the run of our house.  I have a Cat Condo for them (which I bought from Wayfair!!)  which they really love but they like looking out the windows at the bunnies and birds in the neighborhood.  This small cat tree sits perfectly on a table in front of the living room window.  They both can lay on it (upper and lower) and look outside.  This was a wonderful purchase!