9. The computer of claim 6 , wherein the memory further stores a search index, and the one or more computing devices are further configured to store the system tag in the search index.
6. A system comprising: memory storing a plurality of 3D models of objects, wherein each 3D model of an object of the plurality of 3D models of objects is associated with information defining a geographic area of a base polygon of the respective object, the memory also storing map information including a plurality of points of interest, where each point of interest of the plurality of points of interest is associated with a geographic coordinate; and one or more computing devices configured to: identify a 3D model of an object from a plurality of 3D models of objects, wherein each 3D model of an object of the plurality of 3D models of objects is associated with information defining a geographic area of a base polygon of that respective object; determine whether a geographic coordinate of a point of interest is within the geographic area of the base polygon; when the geographic coordinate of the point of interest is within the geographic area of the base polygon, create a system tag including a search term selected based on the given point of interest; and associate the system tag with the identified 3D model of the object.