Interior view of this Boone 4-season room addition. Or, call it a sunroom if you prefer. Open/Cathedral ceiling, floor-to-celing windows all around, trapezoid windows in the gable…all combine to give this large room a very open, airy feeling. See more about this project in the Jan/Feb 2012 edition of Welcome Home Des Moines magazine. Archadeck of Central Iowa, your Des Moines area provider of custom rooms, spaces and accessories for – or that feel like they are for – outdoor living.