Institutional seats of the European Union are based in Luxembourg City along with the European Investment Bank. The Economic and Social Committee and the Committee of the Regions are entirely based in Brussels while the European Central Bank is based in Frankfurt and Europol is the only agency to have its seat fixed by the treaties, in The Hague. Separately, the Treaty of Nice establishes Brussels as the venue for all formal summits of the European Council after 2004. However some extraordinary sessions are sometimes held outside the city. The European Council's seat is however fixed by a declaration rather than a protocol, meaning it is
Languages of the European Union that its member states have autonomy for language education, which by treaty the European Community must respect. The vast majority of EU languages belong to the Indo-European family, the three dominant subfamilies being the Germanic, Romance, and Slavic. Germanic languages are spoken in central and northern Europe and include Danish, Dutch, English, German, and Swedish. Romance languages are spoken in western, southern European regions; they include French, Italian, Portuguese, Romanian, and Spanish. The Slavic languages are to be found in the central Europe and the Balkans in southern Europe. They include Bulgarian, Croatian, Czech, Polish, Slovak, and Slovene. The Baltic