Vauban fortifications

Maastricht ( , , ; ) is a city and a municipality in the southeastern Netherlands. It is the capital and largest city of the province of Limburg. Maastricht is located on both sides of the Meuse (), at the point where the river is joined by the Jeker. Mount Saint Peter (Sint-Pietersberg) is largely situated within the city's municipal borders. Maastricht is adjacent to the border with Belgium and is part of the Meuse-Rhine Euroregion, an international metropolis with a population of about 3.9 million, which includes the nearby German and Belgian cities of Aachen, Liège, and Hasselt.

large city in Baden-Württemberg, Germany

Saarlouis (; , ; formerly Sarre-Libre and Saarlautern) is a town in the state of Saarland, in western Germany, located on the banks of the Saar river. With a population of over 37,000 (2024), it is the fifth-largest city of Saarland and serves as an important regional center. Saarlouis lies near the border with France and Luxembourg. The town functions as the administrative seat of the district of Saarlouis and is part of the cross-border SaarLorLux Euroregion.

Landau (), officially Landau in der Pfalz (, ), is an autonomous (kreisfrei) town surrounded by the Südliche Weinstraße ("Southern Wine Route") district of southern Rhineland-Palatinate, Germany. It is a university town (since 1990), a long-standing cultural centre, and a market and shopping town, surrounded by vineyards and wine-growing villages of the Palatinate wine region. Landau lies east of the Palatinate forest, on the German Wine Route.

Kehl (; ) is a city with around 38,000 inhabitants in the southwestern German state of Baden-Württemberg. It lies in the region of Baden on the Rhine River, at the confluence with the smaller Kinzig River, directly opposite the French and Alsatian city of Strasbourg. It is the third-largest city of the Ortenaukreis (Ortenau District) after Offenburg and Lahr/Schwarzwald.

Philippsburg () is a town in the district of Karlsruhe, Baden-Württemberg, Germany.

thumb|Traben on the Moselle (river)|Moselle Traben-Trarbach () on the Middle Moselle is a town in the Bernkastel-Wittlich district in Rhineland-Palatinate, Germany. It is the seat of the like-named Verbandsgemeinde and a state-recognized climatic spa (Luftkurort). The city is located in the Valley of Dawn.

World Heritage site in France

fortifications in and around Luxembourg City, Luxembourg, largely dismantled in 1867