The European Union (EU) is a supranationalpolitical and economic union of 27 member states that are located primarily in Europe. The union has a total area of 4,233,255.3 km2 (1,634,469.0 sq mi) and an estimated total population of about 447million. The EU has often been described as a sui generis political entity (without precedent or comparison) combining the characteristics of both a federation and a confederation.
Founded around 500 BC, Vienna was originally a Celtic settlement. In 15 BC, Vienna became a Roman frontier city guarding the Roman Empire against Germanic tribes to the north. Art and culture have a long tradition in Vienna, in the areas of theatre, opera, classical music and fine arts. Apart from the Burgtheater which, together with its branch, the Akademietheater, is considered one of the best theatres in the German-speaking world.
Image 2A cartogram depicting the population distribution between old EU-27 member states in 2008 (including the UK and excluding Croatia). 58% of all citizens of the EU live in the four largest member states: Germany, France, Italy, and Spain. (from Demographics of the European Union)