The European Parliament is the only directly-elected body of the European Union. The members of the European Parliament are elected once every five years by voters right across the 28 member states of the European Union on behalf of its 500 m citizens. www.europarl.europa.eu Brussels: Rue Wiertz, Wiertzstraat, B-1047 Bruxelles, Belgium Luxembourg:, Plateau du Kirchberg, B.P. 1601, L-2929 Luxembourg Strasbourg: » Continue Reading.