I love conservatories. My husband and I were lamenting the fact that because we live in the city on a tree-lined street we don't get enough sun to have a garden. If I can't have a garden, I'd really like is one of these:
All of the above conservatories by Amdega.
Tanglewood conservatory (pool house).
Our house is over 100 years old so these styles would complement it perfectly. Seems like a great place to curl up in winter with a book. Or write. Or draw. Or just daydream about spring.