On 25 March 1449, the Late Gothic Church of Mary (Marienkirche), work on which had begun in 1446 under Antwerp master builder Cluys, was consecrated by Archbishop of Trier Jakob von Sierck.

In the course of the War of the Polish Succession, Imperial troops under Friedrich Heinrich von Seckendorff’s command beat a French army led by Marshal François de Franquetot de Coigny on 20 October 1735 at the Battle of Clausen (commonly spelt thus in English history texts).

The German blazon reads: In Gold eine zur Kreuzblume erblühte blaue Lilie mit doppeltem grünen Fruchtknoten.

The municipality’s arms might in English heraldic language be described thus: Or a fleur-de-lis, the middle petal winged and charged with a cross azure, and doubly seeded vert.

Landesstraßen (State Roads) 47 (from Trier to Machern) and 50 (from Piesport to Binsfeld) both run right through the municipality and form the links to the neighbouring municipalities: Salmtal in the north, Piesport in the south, Esch and Sehlem in the east and Osann-Monzel in the west.

Klausen lies in cell 338 in the Verkehrsverbund Region Trier (VRT) plan and has all together 5 bus stops at its disposal.

RMV bus route 212 runs direct buses twice daily on weekdays between Klausen and the nearest city, Trier, passing through Esch, Rivenich, Hetzerath, Föhren and Schweich on the way.

The nearest Regionalbahn stations are Salmtal and Sehlem (Kr Wittlich) on the Koblenz-Trier railway line, both of which are some 5 km away from Klausen.