The construction of Notre-Dame de Paris was no quick feat—it spanned two centuries, from 1163 to 1345, due to its ambitious design and stunning attention to detail. Construction of Notre Dame began in 1163 and was completed in 1345. What’s truly remarkable is that multiple generations of architects shaped Notre-Dame, ensuring it evolved seamlessly into the masterpiece we admire now—an enduring symbol of Paris. The flying buttresses, ribbed vaults, and clever design kept this giant from toppling. It’s a masterpiece of medieval engineering that’s lasted the test of time—and weather.