Institutional seats of the European Union the ECSC (or be generously compensated); France supported Strasbourg, and Italy continued to promote Milan. However, it was decided that the Common Assembly, which became the Parliament, should instead be based in Strasbourg—the Council of Europe (CoE) was already based there, in the House of Europe. The chamber of the CoE's Parliamentary Assembly could also serve the Common Assembly, and they did so until 1999, when a new complex of buildings was built across the river from the Palace. The creation in 1957 of the European Economic Community (EEC) and the European Atomic Energy Community (EAEC or Euratom) created new
Institutional seats of the European Union less binding than the other seats. The 2011 Treaty Establishing the European Stability Mechanism (ESM) states that the seat of the ESM must be in Luxembourg. The ESM should be ratified and active in mid-2013 and it is allowed to establish a liaison office in Brussels. There are numerous other bodies and agencies that have not had their seats fixed by treaties. Brussels hosts the European Defence Agency (as NATO and formerly the WEU are also in the city). Luxembourg hosts the Translation Centre for the Bodies of the European Union and the European Investment Bank. Strasbourg and Brussels both