360 Cities is a site that provides extremely clear panoramic imagery of places around the world. The service has been available online and as a Google Earth layer for years. Now the service is available as an iPad and iPhone app too.
The panoramic imagery of 360 Cities is so clear and transitions so smoothly that I almost made myself dizzy while playing around with imagery of Atlanta, Georgia. The app also allows you to capture and share your own 360 degree imagery.