The article delves into the hidden historical significance of two long underground galleries beneath Castle Hill in Nice, France. These passages were initially excavated by the local civil defense and later expanded by German forces during World War II. They run beneath the famous Promenade des Anglais, unknown to many visitors who flood the nearby streets and shorelines. The narrative invites readers to explore these through a guided visit, revealing the rich and often overlooked history that lies beneath one of the city's most iconic landmarks.

The piece vividly describes a visit led by Alain Grandieux, who unlocks the concealed entrance to the bunkers, emphasizing the secrecy surrounding these structures. The imposing iron doors, marked with warnings, lead to an experience few tourists have, providing insight into the military strategies used during the war and the everyday life of those who sought refuge in these underground networks. The curiosity generated by accessing these hidden spaces highlights a blend of historical intrigue and the stark realities faced during the war.

Overall, the exploration of Castle Hill's underground will likely spark interest in preserving this aspect of heritage and in educating the public about the historical narratives tied to the region. The articles’ vivid portrayal and guided experiences encourage a deeper appreciation for the history of the site, underscoring the importance of remembering the past while experiencing the present beauty of Nice.