The neighborhood often referred to as the "Beverly Hills of Paris" is the 16th Arrondissement, specifically the areas surrounding Avenue Foch and the Passy district. Like Beverly Hills, the 16th is characterized by its extreme wealth, wide tree-lined boulevards, high-end private mansions (hôtels particuliers), and a distinct sense of quiet, manicured exclusivity. It is home to many foreign embassies, prestigious schools, and some of the city's most expensive real estate. Avenue Foch, one of the widest avenues in the world, is lined with palatial residences that mirror the opulence of North Canon or Rodeo Drive. While Saint-Germain-des-Prés (6th) is often cited as the most expensive for its trendy boutiques and cafes, the 16th remains the traditional stronghold of the Parisian "Old Money" and international elite, offering a residential grandeur and privacy that most closely matches the lifestyle and aesthetic of the famous California zip code.