Perl is a municipality in Merzig-Wadern, Saarland, Germany. In 2020 its population was 8,824. It is situated on the right bank of the river Mos…Perl is a municipality in Merzig-Wadern, Saarland, Germany. In 2020 its population was 8,824. It is situated on the right bank of the river Moselle, on the border with Luxembourg and France, approximately 25 km southeast of Luxembourg City. It is joined by a bridge across the Moselle with Schengen in Luxembourg and by a second bridge between Nennig and Remich. A fine Roman mosaic has been found in the village of Nennig.