My cat just loves this.  It fits perfectly in my dining room that over looks the front yard and one pedastal is about level with the middle of window so Zeke can chill on it and look out and about.  He also loves the fact that the tallest pedastal is one that I can't reach him on.  He's constantly up and down and all over it.  He doesn't go inside the cubby hole much more than to retrieve his toys that I have now started to store in there since he doesn't go in for anything else.

Only negative point I have really is that the "toys" it came with (the dangling yarn balls" were destroyed within 30 seconds (not kidding) and scattered all over my house to where I am still finding bits and pieces after 4 months!  My suggestion would be to forgo those yarn balls and use the string and tie those krinkle balls on instead.  Now THOSE rock in my cats eyes.  Still holding strong too!