On the 1km ferry crossing to the town of Lévis, the best views are undoubtedly on the Québec City side of the vessel. The Citadelle, Le Château Frontenac and the seminary dominate the clifftop cityscape. Once you disembark, riverside Lévis is a relaxing escape from the intensity of Québec City's Old Town.
Near the ferry landing, the Terrasse de Lévis, a lookout point inaugurated in 1939 by King George VI and (the then future) Queen Elizabeth II, offers excellent vistas of Québec and beyond from the top of the hill on Rue William-Tremblay.
In Old Lévis, the main shops and restaurants are on Ave Bégin. For more views of Québec, head south on the riverside path through Parc de l'Anse-Tibbits.