a small enclosure can be built covering a window to let your cats enjoy the fresh air and experience all the sights and sounds of your yard in safety
Maybe start with a small enclosure on the back of the kitchen and then add runs to the bottom of the garden later?
Outdoor Cat Enclosures
DIY Cat Enclosure for Indoor Cats that Wanna be Outside Cats...HAVE to have this for my cats.
Tips & Tricks
Our Customers | Runaround: Rabbit and Guinea Pig Runs
Cat Runs & Cat Proofed Gardens - Page 11 - Pet Forums Community
There's a new trend ()since she sheds) for outdoor decorating: catios, a patio for your cat. These enclosed cages let your cats run around outside in your backyard.
Just for Fun
The cat's meow: Check out cat patio styles on the Catio Tour (photos, video) | OregonLive.com
Cagey Kitty: 7 Safe & Secure Outdoor Cat Enclosures | WebEcoist
Cat+Outdoor+Enclosures | Figure 9 & 10: Cat kennel built in back yard with chicken wire and ...