What is Aar?
[[Image:Aare river in Bern.jpg|thumb|250px|The Aar river at Bern]] The '''Aar''' ([[German language|German]]: ''Aare'') is a [[tributary]] of the [[Rhine]] and is the longest [[river]] that both comes up from and ends completely inside of [[Switzerland]].<ref name=CVDE>Bridgwater, W. & Beatrice Aldrich. (1966) ''The Columbia-Viking Desk Encyclopedia''. Columbia University. p. 11.</ref> == References == {{reflist}} {{multistub|Switzerland|geo}} [[Category:Rivers of Switzerland]]