Entrée, the Rue du Marais and at the Mont des Arts. The first purpose-built building was the Berlaymont building in 1958, designed to house 3000 officials, which soon proved too small, causing the institution to spread out across the neighbourhood. Yet, despite the agreement to host these institutions in Brussels, its formal status was still unclear, and hence the city sought to strengthen its hand with major investment in buildings and infrastructure (including the metro station Schuman). However, these initial developments were sporadic with little town planning and based on speculation (see Brusselisation). The 1965 agreement was a source of contention for the Parliament, which wished to be closer to the other institutions, so it began moving some of its decision-making bodies, committee and political group meetings to Brussels. In 1983, it went further by symbolically holding a plenary session in Brussels, in the basement of the Mont des Arts Congress Centre. However, the meeting was a fiasco and the poor facilities partly discredited Brussels' aim of being the sole seat of the institutions. Things looked up for Brussels when, in 1985, the Parliament gained its own plenary chamber in the city (on the /) for some of its part-sessions. This was done unofficially due to the sensitive nature of the Parliament's seat, with the building being constructed as an "international conference centre". When France unsuccessfully challenged the Parliament's half-move to Brussels in the Court of Justice, the Parliament's victory led it to build full facilities in the city. Edinburgh European Council compromise In response the Edinburgh European Council of 1992, the EU adopted a final agreement on the location of its institutions. According to this decision, which was subsequently annexed to the Treaty of Amsterdam in 1997, although the Parliament was required to hold some of its sessions, including its budgetary session, in Strasbourg, additional sessions and committees could meet in Brussels. It also reaffirmed the presence of the Commission and Council in the city. Shortly before this summit, the Commission moved into the Breydel building, at 45, /. This was due to asbestos being discovered in the Berlaymont, forcing its evacuation in 1989. The Commission threatened to move out of the city altogether, which would have destroyed Brussels's chances of hosting the Parliament, so the Belgian Government stepped in to build the Breydel building a short distance from the Berlaymont, in only 23 months, ensuring the commission could