Moselle

Perl is a municipality in Merzig-Wadern, Saarland, Germany. In 2010 its population was 7,593.

Apach (German: Apach) is a commune in the Moselle department in Grand Est in northeastern France.Apach is 2 km (1.2 mi) from Sierck-les-Bains, 25 km (16 mi) from Thionville, and 50 km (31 mi) from Metz. It is on the border of Germany and Luxembourg, the municipalities just across the border being Perl in Germany and Schengen in Luxembourg.

Sierck-les-Bains (German: Bad Sierck, Lorraine Franconian: Siirk/Siirck) is a commune in the Moselle department in Grand Est in north-eastern France.Localities of the commune: Rudling, Kœnigsberg (German: Rudlingen, Königsberg)

Schengen Castle (French: Château de Schengen) is located in the village of Schengen in the south-east of Luxembourg close to the borders with France and Germany. Dating from 1390 but almost completely rebuilt in the 19th century, it was a hotel and conference centre until it was sold to Regus in 2016.