I’ve just returned to teaching after a year’s fellowship at the Woodrow Wilson International Center for Scholars. It’s a great place for anyone who wants to write a book (although you usually are expected to have completed one book already before applying), with good conversation (fellows are usually historians, social scientists or journalists) good offices, and a lot of intellectual activity. The Fellowship application page is here. If you think that it sounds interesting, and are able to transplant to DC for a year, I really recommend it (and am happy to provide advice in comments as needs be).