Roman fortifications in Raetia

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thumb|upright=1.4|Aerial image of Passau showing the old town and the confluence of the rivers Inn, Danube, and Ilz (from left to right) Passau (; ) is a city in the Lower Bavaria (Niederbayern) region of the German state of Bavaria. It is also known as the '''''' ("City of Three Rivers"), as the river Danube is joined by the Inn from the south and the Ilz from the north.

Merano or Meran is a (municipality) in South Tyrol, Northern Italy. Generally best known for its spa resorts, it is located within a basin, surrounded by mountains standing up to above sea level, at the entrance to the Passeier Valley and the Vinschgau.

fortifications of ancient Roman provinces

portion of the Roman limes in Germany

World Heritage Site

thumb|250px|Amphitheater of Vindonissa thumb|250px|Modern re-construction of the southern gate Vindonissa (from a Gaulish toponym in *windo- "white") was a Roman legion camp, vicus and later a bishop's seat at modern Windisch, Switzerland. The remains of the camp are listed as a heritage site of national significance. The city of Brugg hosts a small Roman museum, displaying finds from the legion camp.

former Roman fort in Irgenhausen, Switzerland

thumb|upright=1.3|The hoard of Neupotz is directly linked to the plundering that took place after the Limesfall; hence it was also called the "Alemannian booty" (Alamannenbeute). thumb|upright=1.3| time table The Limesfall is the name given to the abandonment of the Upper Germanic-Rhaetian Limes (built in 1st century) in the mid-3rd century AD by the Romans and the withdrawal of imperial troops from the provinces on the far side of the rivers Rhine and Danube to the line of those rivers. It is sometimes called the fall of the limes.

Roman Defensive Fortifications

The Roman fort at Weissenburg (), called Biriciana in ancient times, is a former Roman ala castellum, which is a UNESCO World Heritage Site located near the Upper Germanic-Rhaetian Limes. It lies in the borough of Weißenburg in the Middle Franconian county of Weißenburg-Gunzenhausen in Germany. Today the castellum is one of the most important sites of research in the Roman limes in Germany. The site contains partly subterranean building remains, a reconstructed north gateway, large thermal baths and a Roman Museum with an integrated Limes Information Centre.