BrainInfo is a portal to neuroanatomical information on the Web. It helps you identify structures in the brain and provides a variety of information about each structure by porting you to the best of 1500 web pages at 50 other neuroscience sites. BrainInfo also contains three unique knowledge bases of its own: NeuroNames, which provides the index to brain structures and narrative information about them; the Template Atlas, which shows the structures that are found in the primate brain; and NeuroMaps, a set of several hundred overlays that will show the location of different kinds of information that have been mapped to the standard background maps (templates) of the Atlas.