10. The Hidden Library Tower
From the outside, it is nothing special — grey stone, narrow windows, an ordinary watchtower. Climb the stairs, though, and the top floor opens into a round library: bookshelves floor to ceiling, a reading chair by the window, candles in every corner. I keep my enchanted books here, and my maps, and the journal where I write down everything I have found. It is quiet up there. The best ideas happen in quiet rooms.