The Federation Executive Building was a building on Earth in Paris, France used for government operations by the United Federation of Planets.
Prior to the construction of the Palais de la Concorde Council President Thomas Vanderbilt operated out of that building, as did Federation President Haroun al-Rashid. During President al-Rashid's first term in office the Palais de la Concorde was built. al-Rashid and future Presidents would operate out of the Palais. (ENT - Rise of the Federation novel: Uncertain Logic and ST novel: Articles of the Federation)