European Heritage Days are a joint initiative of the Council of Europe and the European Union aimed at promoting monuments and cultural heritage. All Member States of the Council of Europe participate in the project, including Poland, which joined the action in 1993. European Heritage Days are the largest social and educational project in Europe, as well as themost important celebration of monuments of the Old Continent. The main objective of the EHD is broadly defined historical and cultural education, promoting the diversity of regional cultural heritage, highlighting common European roots and promoting intercultural dialogue. Each year in September, the countries where the event takes place make numerous monuments and cultural sites available to the general public, as well as organise lectures, exhibitions and other accompanying events, aimed at a diverse audience, which gives the event a universal dimension. The organisers of European Heritage Days provide free entrance to monuments and other cultural objects: museums, open-air museums, parks, gardens, which are not free of charge or are not accessible to visitors at all times. They also offer many other attractions, such as: concerts, exhibitions, historical festivals, presentations of disappearing professions, lectures, fairs of artistic and craftsmanship products; they encourage contact with culture and monuments, popularize regional traditions and customs among the society. One of the coordinators of the European Heritage Days in the Lodz region is the Lodz House of Culture, whose important task is to popularise and educate the public and to raise awareness of the issues of cultural heritage. [cyclical project, implementation 09.2020].