Angy & ACL!ACL, I checked, and I believe you are right, but I could not find a nice video for the "British" oldest organ...

Good day Ira! I do believe that in Carisbrooke Castle on the Isle-of-Wight in the UK, is an organ built for Winchester Priory (now Winchester Cathedral), in the thirteenth century (c.1250AD) - still playable. This organ was restored in the 1600s for Charles I. We know that Winchester Priory (Winchester being the ancient Capital of Great Britain) always had an organ as early as 900AD (according to the doomsday book and Dom Bedos).

The organ in Carisbrooke Castle has offered some evidence of … [More]

Thanks, Ira

"One of the more unusual attractions of the Swiss canton of Valais is a 600-year-old organ, believed to be the oldest functioning organ in the world. It is housed in an 800-year-old fortress-church on a hill in Sion, the capital of the Canton.
"The organ, built in 1390 and most recently restored in 1954, is mounted on a wooden pulpit jutting out like a ship's bow from the rear wall of the Romanesque-Gothic church, once the Cathedral of Sion and one of Switzerland's most haunting edifices."