Catio Window Cats

My cats are so spoiled with their 9 by 9 ft. catio! 

I had looked into having one like this built. 

But I didn't think it would be roomy enough for six cats to occupy peacefully! 

Though I wouldn't mind having one like this on my front kitchen window!

Not sure the source for this picture.
As soon as I find it, I will give credit where it is due or replace.