The ING-GRAD Ltd. Company has performed a range of works connected with the improvement, restoration and conservation of monuments and cultural heritage in all the regions of Croatia. Investors have been prominent national and church establishments and institutions, such as the Ministry of Culture of the Republic of Croatia, Croatian Conservation Institute, Heritage Authority offices in Osijek, Split, Rijeka, the Archaeological Museum in Pula, The Croatian State Archives, Archdiocese of Zagreb, Diocese of Đakovo and Syrmia, Đakovačka i Srijemska biskupija, Episcopal Ordinariate in Požega, Archdiocese of Rijeka, Episcopal Ordinariate in Poreč, parishes, local district and town hall governments and other placers of order. The activities include sacred architecture, historic buildings and edifices such as fortresses, castles and palaces. Those structures, dictate a special approach and relationship towards the work, especially when they obtain a new function, adjusted to current demands of their users and placers of order. In the course of building, wherever possible, special techniques, based on the knowledge of old masters' techniques, skills and prescriptions, have been applied.