Exquisite altarpieces, medieval burial slabs and other works of religious art can be seen in this 1230-era church-turned-museum. Saints, dancing skeletons and silver – not to mention the occasional organ concert – are the main attractions here.
https://www.visittallinn.ee/eng/visitor/see-do/sightseeing/pid-174741/niguliste-museum-st-nicholas-church