Google Earth Gallery is now showcasing some fascinating 3D buildings (along with bridges and statues and other structures) around the world. To play a tour, simply click on the "Open in Google Earth" link to download the KML file. Then click the "Start tour here" link in the "Places" panel in Google Earth. Make sure the "3D Buildings" layer is checked in the "Layers" panel. The tour will pause at each location to ensure the 3D building is fully loaded. Click the play button to continue the tour.
Source:→ Google LatLong blog