In general, the fixed requirements, which include window area, wall thickness and mass, length and volume of flow paths, and orientation, can be incorporated into attractive, traditional looking buildings that can either announce or hide the fact that they are twenty-first century Solar/Geothermal homes.
You can control this "entry statement" by your choice of site- whether the approach and entry is on the greenhouse Southern solar side, or on the North, East, or West, where we have more architectural leeway.