Lamego is a city and municipality in the Viseu District, in the Norte Region of the Douro in northern Portugal. Located on the shores of the Balsemão River, the municipality has a population of 26,691, in an area of 165.42 km2. With origins before the Roman occupation of the Iberian Peninsula, Lamego is known for its historic city center, having a long history as a principal city of the former Trás-os-Montes e Alto Douro Province.