The Esch-sur-Sûre Dam is an arch dam built across the Sûre river just upstream of Esch-sur-Sûre village, creating the Upper Sûre Lake. The dam wall rises about 50 metres and can be viewed from a footpath that crosses its crest, giving a good sense of the scale of the reservoir stretching back through the forested valley.
The viewpoint from the dam crest looks south over the village of Esch-sur-Sûre, with the ruined castle above and the horseshoe bend of the river visible below. It is a five-minute walk from the village car park and worth combining with a visit to the castle and a walk along the lake shore.