Constitutional Council (France)
The Government of France consists of an executive branch (President of the Republic, Prime Minister, ministers, and their services and affiliated organizations), a legislative branch (both houses of Parliament), and a judicial branch. The judicial branch is, unlike for instance the federal judiciary of the United States under the Supreme Court, not organized into a single hierarchy (administrative courts fall under the Council of State, civil and criminal courts under the Court of Cassation), and some of its entities also have advisory functions. For historical reasons there has long been a hostility to having anything resembling a "Supreme Court"—that is, a powerful court able to quash legislation. Whether the Council is a court is a subject of academic discussion, but some scholars consider it the supreme court of France.
Court of Cassation (France)
The Court does not have juisdiction over cases involving claims against administrators or public bodies, which fall within the jurisdiction of administrative courts, for which the Council of State acts as the supreme court of appeal; nor over cases involving constitutional issues, which fall within the jurisdiction of the Constitutional Council; nor over cases involving disputes about which of these courts has jusridiction, which are heard by the Jurisdictional Disputes Tribunal. Collectively, these four courts form the topmost tier of the French court system.