The Charles Forberg-designed LongHouse, Larsen’s estate in East Hampton, was inspired in equal parts by Japanese Shinto shrines and Larsen’s old New York City loft. A glass ceiling is embedded along the spine of the peaked roof, and allows for such remarkable rooms as the entryway-turned-greenhouse. Larsen says, "It’s remarkable that there aren’t more glass-ceilinged rooms. It didn’t cost more than a real ceiling, and it doesn’t lose or gain more heat, but if you can’t be outdoors, it’s very pleasant and the plants like it." The beams and trusswork were made from Douglas fir in Minnesota.