And this is the (partly) open position. The main bedroom is upstairs at the near end of the house so remains covered at all times. But the upstairs living space, the dining space and the kitchen downstairs and some of the other upstairs rooms are all open. There is a low bookshelf surrounding the upstairs area which acts as a safety barrier and keeps out the worst of the wind. But downstairs would be fully open to the surrounding gardens.
Note the glazed gable which in this position is free-standing and largely unsupported. One of the key jobs will be to get the engineering of this right so that it is able to withstand the wind (it faces southwest, which is the prevailing wind direction)