Italy has an advanced economy. The country is the eighth-largest by nominal GDP (third in the European Union), the sixth-largest by national wealth and the third-largest by central bank gold reserve. It ranks highly in life expectancy, quality of life, healthcare, and education. The country is a great power and it has a significant role in regional  and global  economic, military, cultural, and diplomatic affairs. Italy is a founding and leading member of the European Union and a member of numerous international institutions, including the United Nations, NATO, the OECD, the Organization for Security and Co-operation in Europe, the World Trade Organization, the Group of Seven, the G20, the Union for the Mediterranean, the Latin Union, the Council of Europe, Uniting for Consensus, the Schengen Area, and many more. The source of many inventions and discoveries, the country has long been a global centre of art, music, literature, philosophy, science and technology, and fashion, and has greatly influenced and contributed to diverse fields including cinema, cuisine, sports, jurisprudence, banking, and business. As a reflection of its cultural wealth, Italy has the world's largest number of World Heritage Sites (58), and is the fifth-most visited country.