Keywords: spatial data, metadata, integration, harmonization, standardization, modeling of spatial objects, national infrastructure on spatial data, INSPIRE, map services, WMS, WFS, interoperability, catalogue services Metadata with spatial data are an integral part in the implementation of spatial data. Likewise, their usage is based on the successive steps: discovery - view - download. Ministry of Environment through its professional organizations publish a large number of map services that are used in applications for public administration and public. The presentation lists some examples of how to effectively use these services and may make the work more effective of public administration and public.