A union of Google Earth and Google Map took place yesterday (4/26/2010) resulting in Earth view. To be able to see the Earth view, you need to install the Google Earth browser plugin. From the LatLong Blog:
Those of you who aren’t as familiar with Google Earth might be wondering how Earth view differs from the satellite view that’s currently available in Maps. First of all, Earth view offers a true three-dimensional perspective, which lets you experience mountains in full detail, 3D buildings, and first-person dives beneath the ocean. The motion is fluid, and you can see the world from any viewpoint. Because Earth view is built right into Maps, you can switch back to cartographic view simply by clicking on the “Map” button. The view will even adjust automatically to a top-down, north-heading perspective as you transition. In essence, you now have all the best mapping tools at your fingertips, all in one place.