Business and politics go hand in hand in the capital city of Belgium, Brussels. The city is known as the second international city in the world because it has numerous headquarters of international organisations and is also the capital of the European Union. The headquarters of Nato is also in Brussels. Apart from politics, the capital has a number of big banking institutions such as BNP Paribas, which has been present in Belgium since 1871. The Brussels branch is part of its international network, which accounts for 202,500 employees in more than 84 countries. BNP Paribas Group, which includes BNP Paribas Fortis, is the euro zone's largest bank by deposits. BNP Paribas Belgium is particularly dedicated to corporate and institutional clients. About one-third of Brussels' one million inhabitants are foreigners, most of whom are either Islamic immigrants or civil servants, expatriate business people and diplomats working for the EU, Nato, or one of the many other multinational institutions or firms that are located there. The city is officially bilingual as all official announcements and street names are in French and Flemish. However, almost everybody in Brussels understands or speaks English, and you will hear many more different languages when you stroll through the city centre. With its more than 1,000 years of history, Brussels offers visitors many fascinating sights, including the most beautiful historic market square, and gourmets can delight in the highest concentration of restaurants in the world.