 The Louvre, once Paris' second Royal Palace, is today a museum, garden (Tuileries), and, more recently, a shopping mall and fashion-show centre (Le Carrousel du Louvre).The Palais-Royal just to its north, at its origin a residence of the Cardinal Richelieu, is a walled garden behind its rue de Rivoli facade, with covered and columned arcades that house boutiques forming what could be considered to be Paris' first "shopping arcade".This quarter in general has many 17th- and 18th-century buildings of large standing, as well as some of Paris' more grandiose constructions, namely along the avenue de l'Opéra, from the Haussmann era.