Far Left:
Climbing wall with scooped beds and shelves. There were benches to be placed beneath the shelves to serve as the "first step" up.
Middle:
Corner area with sisal tread shelves leading to a wall of windows and a long sisaled run across those windows. This allowed the cats easy access to an already in place wide windowsill for maximized bird and squirrel viewing!
Above:
Here is the long run allowing multiple cats to view out the window simultaneously. Some can sit on the sill and some cat perch higher up on the sisaled run.