Kitty City in Mandan (North Dakota). Kitty City is a free roam safe haven for hard to place cats, disabled cats and pound cats scheduled for euthanasia. Build unique cat furniture with the modular system of Kitty City! Cats will love hiding and playing on a multitude of platforms, scratching posts, and toys! Products · Parts Kit · Hideaway · Tower. Build your own kitty city Tower, great for a scratching post, and would appear to be a stand alone item, or a set that you can build off of, or add to as you build an.