More than a billion people use Google Maps each month to find their way around town and around the world. To help these people get exactly the information they need, the Google Maps team works constantly to ensure that the geographic data behind our maps is comprehensive and accurate. As part of this ongoing effort, we’ve just released updated maps for 10 countries and regions in Europe: Andorra, Bulgaria, Estonia, Gibraltar, Hungary, Latvia, Lithuania, Slovakia, Slovenia and Spain.

Today’s update is part of a project called Ground Truth that began in 2008. Through this initiative, we...