Choir organs

Paris has a rich collection of choir organs, many of Cavaillé-Coll, many still in more or less original state, many in a desperate state or silent.
They were introduced after the revolution as the results of changing liturgical and cultural traditions and used as instruments to accompany the choir and thus moslty placed in the choir.
The first choirorgan in Paris appeared in 1829 (St-Etienne-du-Mont, built par John Abbey).

Saint-Médard (Roethinger 1964)
Saint-Louis-en-l'ile (Gutschenritter 1965)
Saint-Jean-Baptiste-de-Neuilly (Cavaillé-Coll 1865)
Notre Dame (Boisseau, 1969)