The Saint-Nicolas Heritage Site (French: site du patrimoine de Saint-Nicolas) is a small municipal historic district located in the western part of Lévis, Quebec. It encompasses a group of a half-dozen properties and their dependencies that developed around the estate of a major family. Most of the buildings date from the 19th century, with the oldest dating from the mid-18th century. Two of them were later separately designated historic monuments (French: monuments historiques) at the provincial level.