I was very fortunate to have a quick guided tour/play on the North German School organ in the New Church, Orgryte, Gothenburg.
http://en.wikipedia.org/wiki/North_German_baroque_organ_in_%C3%96rgryte_Nya_Kyrka
Quite an experience. I haven't played a short octave, split key action before! Also, the two odd looking studs on the pedalboard, are in fact notes!