Going travelling and want to know which friends have been to that city and might be able to give you some hints? Then check out the tool in Facebook – go to the menu button (3 bar button bottom right) – City Guides. Then find the city. Clicking on it will show you the friends that have either done checkins in that city, or had location services on, and may show you some of the places they have been. Then contact that friend to tell you more. Facebook will also put up some info about the city for you, guides, events and attractions.