If prefabricated-building kits lie on one end of the spectrum, Tanglewood Conservatories, a Maryland-based atelier that specializes in custom garden rooms, lies on the other. Whether it’s a conservatory you’re after, or a 19th-century copper dome to cap off an existing structure, Tanglewood’s designs are the stuff dream offices are made of. 800-229-2925, tanglewoodconservatories.com
