Crown Room was a restaurant in the Fairmont Hotel on the 23rd floor that has been converted for private banquets and catering.
Get there by taking any cable car route to the Mason/California stop, as they all converge there, and then ride up its glass elevator for a view of the city. I've been there a few times in the past for their buffet lunches. The food, service, and ornate atmosphere were all very good. Eat in spender while taking in the view of the city.