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
Central Bank of Ireland Central Bank of Ireland The Central Bank of Ireland () is Ireland's central bank, and as such part of the European System of Central Banks (ESCB). It is Ireland's financial services regulator for most categories of financial firms. It was the issuer of Irish pound banknotes and coinage until the introduction of the euro currency, and now provides this service for the European Central Bank. The Central Bank was founded on 1 February 1943 and since 1 January 1972 has been the banker of the Government of Ireland in accordance with the Central Bank Act 1971, which can be seen