Facebook has quietly launched a travel planning “City Guides” feature via its latest app update. It has taken the process one step further, by including a Book Now option for major cities’ hotels, restaurants, attractions, and tours.

The potentially powerful functionality draws on places your friends have checked in to, written about, or liked, in addition to a section with a list of “Places the Locals Go.”

Taking an offensive swing at the travel eco-system, Facebook challenges Google Trips (launched in September but without a booking feature), TripAdvisor, and Foursquare. Read more from TechCrunch here.