This is the new Area I installed for my Sires, they have insulated dog houses with plenty of quilts to keep them warm, plus a all metal shelter enclosure to keep the hot sun and rain out.  Air is circulated by large box fans and  cooled with a misting system, in the summer months.

There are four runs, each is 5 ft. wide, by 6 ft. high, and 10 ft. deep.  There are shelves on the back of each unit for them to lay on, and plan on adding additional climbers for them to have fun on.