The Maison Diamantée, a 16th-century building located above the Vieux-Port in Marseille, has officially become the property of the City of Marseille as of Monday, October 5. The municipal government plans to transform it into a cultural site focused on the city's history and heritage, with its first exhibition scheduled for late November. The building, built around 1570, is recognized for its distinctive pointed stones and is one of the oldest structures in Marseille, alongside the Hôtel de Cabre. It survived the destruction of surrounding areas during World War II. The transfer of ownership was formalized with a notarial deed, ending a period of unclear management. The building, which had been officially owned by the Vieux-Marseille Committee, was donated to the city. For decades, the city has managed the 1,000-square-meter, four-level building, which previously housed the Museum of Old Marseille until 2009, then offices for the Marseille Capital of European Culture association, and more recently, municipal services. It also housed the Panier library, whose original site has closed, leaving its future uncertain. The new cultural phase of the Maison Diamantée will include an exhibition of historical models and photographs tracing the city's history and rediscovering emblematic sites, some of which have disappeared or remain present. This exhibition will be part of the "La Folle Histoire de Marseille" festival, held throughout November. Additionally, the exhibition will feature photographs from the Detaille collection, which has already garnered significant attention at the Museum of History. The building is expected to eventually host a permanent collection on the city's history and regularly host events. It aims to become a living cultural space that tells the story of Marseille's past and present, preserving the city's memory for future generations. The site is also intended to serve as an intergenerational space, accessible to both the elderly and the youth, where Marseillais can engage with their history and heritage and share their personal stories of the city.