Ok I understand. Thanks for your complete answer.

Could you explain me how are tagged the canyoning sites on OSM base, please? Thanks a lot for your help.

Nuno Caldeira, I'm sorry for these disagreements.
I didn't want to add wrong informations. My intentions was good. I will not add other informations.

I agree with you, I know that websites such as "Trip Advisor" are prohibited. It was not my source. I have noted your remarks.

I changed the tag "historic=fort" because the shape of this building is specific to a fort: rampart and fortification.
But if this explain is not correct for you, revert.

I had this information on the museum web site. (http://www.madeirastorycentre.com/fr/musee)
And I think that this museum is open. I have read several recent reviews on different websites that give their opinions.

I checked with the "Junta de Freguesia de Santa Maria Maior", and their answer is the following name : Igreja de Nossa Senhora do Socorro. (site: www.jf-stamariamaior.pt)
But the name Igreja de Santa Maria can be used.

I had information on the name of this garden by someone who went there. But I do not have a document to prove it. If you want to delete this information, you can do it.