I bought this cat house for an outdoor kitty.  He loves the lower level for cold days and the upper deck for sunnier warm days.  I added cat warming pads on both levels which makes this the perfect snuggle spot.  It sits on our covered porch and is so cute!  I liked it so much I bought a second cat house for our indoor kitties.  It is the perfect height for them to sit on the deck and look out the window (or sleep all day!).  These are all wood and easy to assemble, not too heavy but substantial enough for cats.   I am so pleased to have found cat houses that are actually cute furniture!!  Highly recommend!