I've admired the cat trees from Angelical Cat Company for over ten years. As part of an early Christmas present to myself, I finally ordered one of their trees. It was delivered today. As expected, Sprocket took over posession and won't let any of the other cats on the tree.
Here's the tree just off the freight delivery truck.
Here is the unwrapped tree in place by the window.
And here's Sprocket on the lower bed, preventing the other fur kids from climbing up.