The constitution of the United Nations Educational, Scientific and Cultural Organization (commonly referred to as UNESCO) was ratified in 1946 by 26 countries, including the UK. Its purpose was to provide for the "conservation and protection of the world’s inheritance of books, works of art and monuments of history and science". The UK contributes £130,000 annually to the World Heritage Fund which finances the preservation of sites in developing countries. Some designated properties contain multiple sites that share a common geographical location or cultural heritage.