This lecture explores the digital reconstruction of Lausanne's urban history through the Lausanne Time Machine project, analyzing historical maps, cadastres, and urban development plans. It delves into the evolution of the city's architecture, infrastructure, and public spaces, highlighting the impact of different urban models and planning regulations. The presentation also covers the transformation of key landmarks, such as the Grand Pont and the Simplon railway line, showcasing the city's growth and modernization over the centuries.