'''Aar''' is a large [[Swiss]] river about 200 m. long, which falls into the [[Rhine]] as it leaves [[Switzerland]].<ref>{{Nuttall|Aar}}</ref> | '''Aar''' is a large [[Swiss]] river about 200 m. long, which falls into the [[Rhine]] as it leaves [[Switzerland]].<ref>{{Nuttall|Aar}}</ref> |