Google has released an update to Google Earth. Now on version 4.

Updated features include:

• higher-quality terrain data for many mountainous regions
• support for “textured” 3D buildings
• view travel photos, hiking trails uploaded from your GPS
• time-stamp the data to create animations of how the world changes over time
• new, simpler user interface

Even look inside buildings, like the Tate Modern Gallery in London.

You can download the update from here.