Sorry for the crappy image quality, I couldn't find the DSLR, so here's some point-and-shoots.
If you are paying attention, you'll note my plan called for four shelves (which I indeed constructed) and yet I have only installed 3. I underestimated the jumping abilities of my furry friends. I have one more premade, and am probably going to buy supplies to make two more, plus the stuff to make a nice padded corner balcony, and branch a second path off from the second step up leading up into the other corner of the room.
Edit: Also, no making fun of my dead sticks in jars. They rule.
Edit #2: A Few more closeups
Kitty thinks these three make him look fat, therefore the grumpy face. He also wishes daddy could have found the digital rebel, since it doesn't make his eyes look like satan.