A picture of the museum, from the street entrance. What a fascinating place! From the Museum's website:

"Dating back to the fifteenth century and nowadays preserved as it was on the eighteenth century, the barn post, now dedicated to the organ, was part of the post house of Roche, of which it is today the last remnant. Its successive renovations allowed the place to take in the collection of the Museum of the Organ in 1983. The building shows an extraordinary framework from the eighteenth century."