My dream home . . .

will have a dog run in it.

The dog run is the hole in the middle of the house. Perhaps the hole in the middle has a more romantic or appealing name, but I've only known it as a dog run. Principally it helped to cool the homes of people crazy or desperate enough to live in the South before air conditioning. The rooms on either side were cooled with the shaded breeze that would blow through the dog run. The shaded porch also helped as well.