The free Google Earth for iPhone app already had information specific to particular locations, including Panoramio pictures and Wikipedia articles, giving you an idea what those locations look like and offering more info about them. Now Google Earth for iPhone includes the "Places" layer, which is similar to the desktop version but specifically tailored to the iPhone's screen.
When you go to a location, Places are marked by an icon. Tapping on the icon brings up a details page that includes articles, photos, and videos, all of which you can view without leaving the application.
