That is the cats’ room.
Yes, they either had cats or monkeys.
Or the branches are there for some kinky thing I never heard of.
My cats would LOVE that, dogs on the other hand wouldn’t have to go for a walk they have a built in fire hydrant, sorta speak!!!
And there you have it. My cat would love it. She sleeps with and on me, but might find a place on that tree she likes better in the summer.