Paul, many of them are listed in Wikipedia (French version). I usually use the google translator to get a better idea of what they say since my French is poor. The English Strasbourg has links to several churches under architecture. http://en.wikipedia.org/wiki/Strasbourg Occasionally churches also went from Protestant to Catholic, e.g. Notre-Dame Cathedral was protestant from about 1524-1681 then reclaimed by the catholics under Louis XIV. http://en.wikipedia.org/wiki/Strasbourg_Cathedral There are several of the larger churches listed in both sites. But I think the French site contains more information (have not confirmed this). Hope this helps, Dave Quote: Is there any way to know when the various churches (like St Guillaume) changed from Catholic to Protestant? ________________________________