Help designing room on my sunporch for recently added 5 ferals less than a year old

any sites you have seen, with pictures, suggestions, please give me their website, the houzz.com looked promising till i lost the pictures of cat rooms and was stuck with 234000 pix to browse so if you can give me any thoughts would be grateful. 

live in coastal ga, have a sunporch cement floor ceiling fans, and currently screened but need to put glass windows up for closed environment. thanks, cm about 10 feet wide and runs length of house

Best Friends Magazine just did an article about cat houses/shelters that people have built for their furry friends.

I had a friend who re-did his screen porch with a series of sliding glass doors.  He made a frame that fit into each open door that he put wire on so the cats wouldn't bust through the screen but that would allow him to keep the doors opened for fresh air.  Wish I had a picture of it but basically he used the doors instead of outside walls.  It was sunny and bright and the air really moved through it, especially on hot sticky days.  His cats (and dogs) loved it.