The Geological Information System in terms of its content and the technical aspects represents a result of activities carried out under the umbrella of the Digital Geological Map of the Slovak Republic at 1: 50 000 and 1:500,000 (Káčer et al., 2005) and Geological Infor-mation System GeoIS (Káčer et al., 2014). One of the aims of these projects was the design and implementa-tion of technical solution for publishing spatial and non-spatial geological information on the Internet.

In 2015 Map Portal has replaced the original version of the Map Server 2008. An extension has been achieved not only in terms of content, but also functional and technical design. It has become the only place which in-tegrates all essential digital spatial information of SGIDŠ.