The European Social Survey (ESS) is one of the largest and most important European research projects in the social sciences. In Poland it is carried out by the PAS Institute of Philosophy and Sociology. Under the EES project, a unique research method has been developed, making it possible to create maps illustrating shifts in social attitudes on key issues, the modification of value systems and human behavior. The survey provides a reliable source of information about the residents of the European Union. The data is available free-of-charge at www.europeansocialsurvey.org.