Great Rooms A visual diary by Design Editor Wendy Goodman. Exterior: Architect Paul Lester Wiener built the courtyard glass-and-steel house for Robert and Ethel Scull in 1962. Lisa Perry discovered it for sale on Instagram and was determined to save it. Photo: Jordan Tiberio In the middle of the pandemic, a bit restless in her country home in North Haven, Lisa Perry was itching for a new project. “I wasn’t looking to buy another house; that was the last thing I needed,” the designer and collector told me. “But I wanted somewhere to go that was creative and inspirational and just an office studio.” Then one day, while scrolling real-estate…