into a single institutional structure. However, with the merged executives, the commission and most departments were grouped together in Brussels, rather than Luxembourg City. The commission was first based on Avenue de la Joyeuse Entrée/Blijde Inkomstlaan, before moving to the Breydel building on the Schuman roundabout, and then its present location in the Berlaymont building. The ECSC secretariat moved from Luxembourg City to the merged body Council secretariat in the Ravenstein building of Brussels. In 1971 the council and its secretariat moved into the Charlemagne building, next to the commission's Berlaymont. These premises rapidly proved insufficient and the administrative branch of the secretariat moved to a building at 76 Rue Joseph II/Jozef II-straat. During the 1980s the language divisions moved out into the Nerviens, Frère Orban and Guimard buildings. To compensate Luxembourg City for the loss of the Commission and Council, a number of provisions were laid out. Firstly, the Court of Justice would remain in the city. Some departments of the Commission and the Assembly, including the Secretariat of the Assembly would remain along with European Investment Bank (further, particularly financial, institutions would also be prioritised for Luxembourg City). The council would also have to hold sessions in Luxembourg City during April, June and October. It also confirmed Strasbourg as the seat of the Parliament. With the prioritisation of Luxembourg City for future institutions, in 1977 the Court of Auditors became provisionally located in Luxembourg City. Edinburgh agreement Despite the 1965 agreement, the Parliament's seat remained a source of contention. Wishing to be closer to the activities in Brussels and Luxembourg City, a few plenary sessions were held by the Parliament between 1967 and 1981 in Luxembourg City instead of Strasbourg—against the wishes of France—and in 1981 it returned to holding sessions entirely in Strasbourg. In the previous year it unsuccessfully issued an ultimatum to the national governments, attempting to force them to reach an agreement. Thus, the Parliament moved some of its decision-making bodies to Brussels, along with its committee and political group meetings, and in 1985 it also built a plenary chamber in Brussels for some part-sessions. All the Parliament's attempts in this field were challenged by member states. In response, the European Council adopted on 12 December 1992 in Edinburgh a final agreement on the seats. The Decision on the location of the seats of the institutions and of certain bodies and departments of the European