Grevenmacher received its town charter in 1242 and was once one of the most fortified towns on the Luxembourg Moselle. The medieval walls are largely gone, but fragments remain embedded in the fabric of the town — a tower here, a section of wall there — and the street plan still follows the old defensive layout. The central square, Place du Marché, is a good starting point for a short walk through the old core.
The Church of Saint Lawrence (Église Saint-Laurent) dates from the 19th century but stands on the site of a much older structure, and its elevated position gives good views over the rooftops toward the Moselle. The town is small enough that an hour's wandering will cover all of it comfortably, and the combination of compact streets, river views, and wine shop signs makes for a pleasant afternoon even without a specific itinerary.