The Cap-des-Rosiers Lighthouse is a lighthouse in Cap-des-Rosiers in Gaspé. It was classified as a National Historic Site of Canada on June 11, 1973. It was listed as a Federal Heritage Building on March 31, 1994. The Cap-des-Rosiers Lighthouse is the tallest lighthouse in Canada, standing 34.1 metres tall. It is situated on the south shore of the Saint Lawrence River at the top of a steep cliff. It is located at the mouth of the river, where it flows into the Gulf of St. Lawrence.