Outside cat run! My dad's been wanting to build something like this for our poor indoor cats for years.
Cat Runs & Cat Proofed Gardens - Page 11 - Pet Forums Community
Kat Cubes - SecureaKat Cat Runs and Cat Enclosures - Australia Wide
Unique, Stylish Pet-Friendly Home Ideas for Your Furry Friends
Cats of Australia: Ideas for Cat Proof Fencing, Cat Enclosures, Cat Runs, Cat Tunnels & more http://www.catsofaustralia.com
Pet Accessories -- Outdoor Cat Enclosure -- This is the ultimate in an outside cat run complete with pond, waterfall, tunnel and fountain. Absolute luxury living for the cats with fish to watch and tunnels to explore.
Outdoor cat run! Have to build one of these someday.