Koblenz (or Coblenz) is a town and municipality in the district of Zurzach in the canton of Aargau in Switzerland. History Middle Ages Koblenz is first mentioned in 10th or 11th Century as Confluentia, for the confluence of the Aare and Rhine rivers. In 1265 it was mentioned as Cobilz. In the Roman era a goods yard and watchtowers existed along the Rhine at this place. The remaining late Roman watchtower is listed as a heritage site of national significance. The town has been settled since the Middle Ages. The Koblenz boatmen had a monopoly over transport of goods from the then important market town of Zurzach downstream along dangerous currents of the Rhine towards Basel. 19th Century With the arrival of the railway in the 19th century Koblenz and Zurzach lost this important source of income. Geography Koblenz has an area, , of . Of this area, or 41.4% is used for agricultural purposes, while or 29.2% is forested. Of the rest of the land, or 19.6% is settled (buildings or roads), or 8.8% is either rivers or lakes and or 0.5% is unproductive land. Of the built up area, industrial buildings made up 1.7% of the total area while housing and buildings made up 9.1% and transportation infrastructure made up 7.8%. Out of the forested land, 26.0% of the total land area is heavily forested and 3.2% is covered with orchards or small clusters of trees. Of the agricultural land, 35.5% is used for growing crops and 5.6% is pastures. All the water in the municipality is flowing water. Of the unproductive areas, and . The municipality is located in the Zurzach district, between the Aare and Rhine rivers. It lies opposite Waldshut in Baden-Württemberg, Germany. It consists of the haufendorf village (an irregular, unplanned and quite closely packed village, built around a central square) of Koblenz. The village of Koblenz is known locally as the "Vier-Brücken-Dorf" (literally: village of four bridges). Two road and railway bridges each cross the Aar and the Rhine. The like-named town Koblenz also lies on a confluence of the Rhine, with the river Mosel in Germany. Coat of arms The blazon of the municipal coat of arms is Or a Bar wavy Azure in chief a boat with an oar Sable and in base a bendlet wavy of the second. Demographics Koblenz has a population () of . , 29.7% of the