A pan-European competition was opened to redesign Bloc A of the Résidence Palace to suit the needs of the institutions. As the original Art Deco facades of the Résidence Palace building were listed as historic monuments, competition rules stated that these had to be retained.[10] In 2005, it was announced that a team involving the architect Philippe Samyn and Partners (architects and engineers), lead and design partner, in collaboration with Studio Valle Progettazioni (architects), and Buro Happold (engineers) had succeeded in submitting the winning design.[2]