Switzerland

The Mill Bridge (Spreuerbrücke)
   This is the oldest wooden covered bridge in Europe and was constructed in 1408. It crosses the River Reuss between the Kasernenplatz and the Mühlenplatz, and features a series of medieval-style 17th Century plague paintings by Kaspar Meglinger.
In medieval Lucerne it was the lowest bridge and the only one where people were allowed to throw wheat chaff (Spreu) into the river, hence the name Spreuerbrücke, but also known as Mill Bridge.
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