The municipal register of monuments has been the subject of many studies. Still, none of them has considered the issue of agreeing on the compliance of an invest ment project on a property that has been entered into the municipal register of monuments and is simultaneously protected under the provisions of the land use plan. This issue has become more relevant in connection with the judgment of the Supreme Administrative Court of 26 March 2024, II OSK 1662/21, which had to rule on the legal basis of such agreement. This commentary discusses the exegesis of the municipal register of monuments, as well as its correlation with laying down monu ment protection in land use plans. The study is enriched with de lege lata and de lege ferenda conclusions regarding the monument protection system, which consti tute a signpost for future legislative changes.