There are many online map services for those who prefer active leisure. For example, here is a map with bike routes
http://www.thunderforest.com/maps/opencyclemap/ You can read about it here -
Route maps are extremely useful! Also while choosing a route it would be beneficial to know the weather in a region of your travelling. Surely we can check weather with http://openweathermap.org. And what if we combine a bike route map and weather data from OpenWeatherMap? Eureka!
MapEditor 2.0 can help us with that!