I've recently started developing this app (www.voyagic.com) as a side project, but before taking it any further I just wanted to validate the idea itself. Basically it takes a single location (this is either randomised if the user wants to discover a new place, or a specific country/ city is entered) and plans out each day of a trip to that location - this is achieved by picking a hotel as a starting point and then, through certain parameters such as distance and popularity, selecting sights, cafes, restaurants and shops that can realistically be visited during the day. Each day has a different combination of places to visit, and minor factors such as parking or transport routes are also taken care of. It would be great to hear what you guys think :)