OpenStreetMap mappers have been able to use imagery of Bing Aerial as a map background. At the end of January 2012, both Bing Aerial and Birds Eye View imagery at military bases in Germany became blurred. This was on request of the German government obviously using data of OpenStreetMap. Bird's-eye view Bird's-eye view displays aerial imagery captured from low-flying aircraft. Unlike the top-down aerial view captured by satellite, Bird's-eye images are taken at an oblique 45-degree angle, showing the sides and roofs of buildings giving better depth perception for geography. With Bird's Eye views, many details such as signs, advertisements and pedestrians are clearly visible. Microsoft has occasionally removed Bird's Eye view from areas where it was previously available. Streetside Streetside provides 360-degree imagery of street-level scenes taken from special cameras mounted on moving vehicles. Launched in December 2009 it contains imagery for selected metro areas in the United States as well as selected areas in Vancouver and Whistler, British Columbia associated with the 2010 Winter Olympic Games (example: Richmond Olympic Oval). Selected cities in Europe were also made available in May 2012. Between August and September 2011, German customers were allowed to appeal against integration of their house or flat in Bing Streetside. According to some officials, the number of appeals was significantly lower than with Google Street View. Only 40,000 requests were sent to Microsoft. In May 2012, Streetside imagery captured in Germany was removed entirely due to numerous requests. For OpenStreetMap editors, display of Streetside tracks and images can be enabled via a map data layer checkbox. Venue maps Venue maps provide a way of seeing the layout of the venue. Currently, Bing Maps provides maps & level wise layouts of over 5300 venues across the world. The categories are: Airports, Amusement Parks, Buildings, Convention Centers, Hospitals, Malls, Museums, Parks, Racecourses, Racetracks, Resorts, Shopping Centers, Shopping Districts, Stadiums, Universities and Zoos. 3D maps The 3D maps feature allows users to see the environment (e.g. buildings) in 3D, with the added ability to rotate and tilt the angle in addition to panning and zooming. To attempt to achieve near-photorealism, all 3D buildings are textured using composites of aerial photography. To view the 3D maps, users must install a plugin, then enable the "3D" option on "Bing Maps". In addition to exploring the maps using a mouse and keyboard, it is possible to navigate the 3D environment using an