Border areas are spaces for exchanges and networking – cultural, linguistic, historical and economic. The latest research on the teaching and learning of neighbour languages in the German-French border regions of SaarLorLux and the Upper Rhine shows the important role of border regions as laboratories for European integration. The articles in this collection address a wide range of aspects of the academic debate around cross-border issues in foreign language teaching. It therefore contributes not only to a deeper scientific debate on this complex topic, but also provides inspiration for a greater integration of the border (area)-related educational aspects of (language) teaching on both sides of the border.