L'École des Arts Joailliers, supported by Van Cleef & Arpels, opens the Hôtel de Mercy-Argenteau for the Heritage Days, the 18th-century residence on boulevard Montmartre where it teaches the jewellery arts: restored salons, the library and conversations on the jewellery professions.
Free, with prior registration; bookings open on 10 September 2026 (registering via L'École's newsletter is advisable).