"Granddad, tell us the story about what the world was like before Google Maps?"
"Well kids, in the days before smartphones, we used to have to look up destinations and landmarks on a big paper map [gasps]. And if you wanted to find out where the nearest coffee shop was, you had to ask a local..."
"It sounds horrid!"
But seriously, Google Maps is a marvel of the modern age, a mapping service that has changed the way many of us navigate the world around us. But are you making the most of Google's cartography offering? Here are 15 things you probably didn't know the map service could do.