Grevenmacher is the main town of the Luxembourg Moselle, sitting on the river at the border with Germany. It is a compact and unhurried place: a small historic centre built on a slope above the river, wine cellars cut into the rock beneath the old streets, and a waterfront that turns into a succession of restaurant terraces in summer. For travellers who know Alsace or the Rhineland wine route, the Luxembourg Moselle will feel familiar — the same combination of neat vineyards, half-timbered buildings, and pride in local Riesling — but quieter and less tourist-worn.
The two main draws are the Caves Bernard-Massard and the Butterfly Garden. Bernard-Massard offers guided tours of its underground sparkling wine cellars, the best single introduction to Luxembourg's wine culture. The Butterfly Garden (Jardin des Papillons), on the riverbank, keeps more than 40 species of tropical butterfly in a large heated greenhouse — simple in concept but genuinely impressive in person.
Beyond those two, Grevenmacher rewards slow walking. The old town centre and remnant walls trace the outline of a medieval fortification, and the Church of Saint Lawrence sits high enough to give views across the rooftops to the river. The Moselle cycle path running south to Ahn and Wormeldange is one of the best easy day rides in the country, flat and well-surfaced with vineyards rising steeply on both sides.
The surrounding wine villages — Ahn, Wormeldange, Machtum — are all within easy cycling distance. The town hosts the Grevenmacher Wine and Grape Festival each September, one of the most convivial annual events in the country.