Could be a solution for monolithic dome windows too : Geodesic Dome Home Living A Natural Spaces geodesic dome home offers you a lifestyle that is at once comfortable, efficient and affordable while it is exciting, uplifting, inspiring and passionate.
The Garden Igloo Kit. in a few different versions. could be a greenhouse +/or alternative to tent accommodations to house a few more summer retreatants. not particularly cost effective though, in my humble view.