Since we had just eaten at the Grande Cascade restaurant, we decided to walk around and visit its namesake, the actual Grande Cascade created by Baron Haussmann in 1852. Napoleon III was personally involved in planning the new parks. “We must have a stream here, as in Hyde Park,” he observed while driving through the Bois, “to give life to this arid promenade”. The first plan for the Bois de Boulogne was drawn up by the architect Jacques Hittorff, and the landscape architect Louis-Sulpice Varé. Their plan called for long straight alleys in patterns crisscrossing the park, and, as the Emperor had asked, lakes and a long stream similar to the Serpentine in Hyde Park. Unfortunately, Varé failed to take into account the difference in elevation between the beginning of the stream and the end. If his plan had been followed, the upper part of the stream would have been empty, and the lower portion flooded. When Haussmann saw the partially finished stream, he saw the problem immediately, dismissed Varé and Hittorff and designed the solution himself. An upper lake and a lower lake, divided by an elevated road, which serves as a dam; and a cascade which allows the water to flow between the lakes. This is the design still seen today.