They say the best way to be experience a city is through the eyes of someone who lives there. So, Swedish agency King and Taxi Stockholm used that bit of insight to create this fascinating "tourist guide" that leverages GPS data from millions of taxi journeys around the city.
Taxi Trails uses heat maps to mark out the most popular taxi destinations. Users can zoom in on an area to explore the places around the hotspots, and to get there, can book a taxi direct from the website. They can also filter and sort the GPS-data in a number of ways; for example, choose day or night, or see where the people from hip areas usually make their taxi journeys.