Geodesy, Cartography and Cadastre Authority of the Slovak Republic (UGKK SR) publishes a large amount of open spatial data, map services and applications through the website www.geoportal.sk. There you can find and download data from airborne laser scanning (point clouds, DTM, DSM), orthophotos, cadastre, ZBGIS geodatabase, INSPIRE, which are also provided through OGC web map services. Instructions for working with this data and map services in the open-source QGIS software are also available on the Geoportal website.