Schengen is a small wine-making village and commune in far south-eastern Luxembourg, on the western bank of the river Moselle. The commune border includes the tripoint where the borders of Germany, France, and Luxembourg meet.

A triple border, tripoint, trijunction, triple point, or tri-border area is a geographical point at which the boundaries of three countries or subnational entities meet. There are 175 international tripoints as of 2020. Nearly half are situated in rivers, lakes or seas. On dry land, the exact tripoints may be indicated by markers or pillars, and occasionally by larger monuments.