Today Italy has the third largest nominal GDP in the Eurozone and the eighth largest in the world. As an advanced economy the country also has the sixth worldwide national wealth and it is ranked third for its central bank gold reserve. Italy has a very high level of human development and it is sixth in the world for life expectancy. The country plays a prominent role in regional and global economic, military, cultural and diplomatic affairs, and it is both a regional power and a great power. Italy is a founding and leading member of the European Union and the member of numerous international institutions, including the UN, NATO, the OECD, the OSCE, the WTO, the G7, G20, the Union for the Mediterranean, the Council of Europe, Uniting for Consensus and many more. As a reflection of its cultural wealth, Italy is home to 53 World Heritage Sites, the most in the world, and is the fifth most visited country.