Realizing the need of map users around the world the Google has come up with a terrain tab. This new tab that depicts "New Terrain layer" that has been launched in Google Maps. The official Google Maps blog informs that now you can mix street maps along with visual information about terrains. "Elevation data is not limited to geographic features like mountains, but it's also displayed for buildings."
"For example, Terrain maps may just be the best way to experience the grandeur of the Grand Canyon or to plan your hiking trip on the Appalachian Trail. And of course, big mountains look really cool. Better yet, you can mix them with custom maps from our users, such as a map of highest points in the United States or a guide to the Pyrenees mountains."