The triangular building is divided into 6 technically independent sections, named after the capitals of the six founding Member States of the European Union (EU): Rome, Paris, Berlin, Luxembourg, Hague and Brussels, respectively. In the centre is a large circular courtyard which is heavily planted and, in 30 years from its construction, the architect insists will look "magnificent".
The building will take three months to bring up to EEAS' needs, including security arrangements. As of August 2010 it hasn't been decided whether the High Representative's office will overlook Schuman roundabout, seeing all the comings and goings between the Commission and Council, or if it will overlook Parc du Cinquantenaire. Unlike the Commission and Council buildings, there is no helipad or private tunnel a car park. However Axa may reinstate a pedestrian tunnel to the Berlaymont so that the High Representative may leave without being seen. Rather than a helipad, the roof is covered in solar panels, as the building is outfitted to the latest environmental credentials. The street side retail units on the ground floor will have totally separate heating and electrical systems for tax and security purposes.