The GIS & Mapping unit also focuses on hosting and maintaining a centralized and highly accurate basemap, or planimetric basemap. This map provides the foundation for other geo-referenced data and associated APIs, including the application NYCityMap. In addition to looking up specific building addresses, users of NYCityMap can select from dozens of other data points such as schools, day care centers, senior centers, green markets, libraries, hospitals, public swimming pools, and more.