Beneath a working hospital on the Île de la Cité — the ancient heart of Paris — construction workers have uncovered a wall dating to the era of Julius Caesar, offering archaeologists their most tangible glimpse yet of the city before Rome fully absorbed it. The find speaks to a perennial truth: that the foundations of great cities are rarely what we imagine, and that the past endures in the margins of the present, waiting for someone to look closely. This single structure, laid by hands more than two thousand years ago, invites us to reconsider Paris not as a Roman creation but as something ol