Standing in the foyer Here we are standing in the foyer. You can see thru the 22 foot dome and into the south side of the house. Remember, the basic shape of this house is an octagon with a 22 foot dome sitting a bit off centered inside the octagon. The kitchen is to the left and to the right is the window seat. Also on the right, just over the wall is the shower in the bathroom. This is the largest vault in the house. It is about eight feet deep and serves as the main entrance into the dome.