If your tastes run to the French organ repertoire perhaps the most famous builder was Aristide Cavaillé-Coll and a list of extant organs by him is in Wikipedia at https://en.wikipedia.org/wiki/Aristide_Cavaill%C3%A9-Coll#Existing_Cavaill%C3%A9-Coll_organs

There are even a few in the UK rather to my surprise so when travel becomes easier in the UK you can sample a few without a passport.

If your tastes run to the French organ repertoire perhaps the most famous builder was Aristide Cavaillé-Coll and a list of extant organs by him is in Wikipedia at Existing Cavaillé-Coll organs.

There are even a few in the UK rather to my surprise so when travel becomes easier in the UK you can sample a few without a passport.