Google has expanded its coverage of 3D Google Earth imagery to include Denver and Seattle.
Google announced the imagery, to make its maps more appealing, back in June. The imagery, first available on Android, made its way to iOS a couple weeks ago.
Safeco Field (Seattle)
Downtown Seattle
Denver Art Museum
Wells Faro Center (Denver)
Google has been adding a lot of impressive imagery to Google Earth and Google Maps recently. The California State Parks and Hawaii Street View imagery have been particularly breathtaking.