This is actually rather handy. An overflow crowd for the wedding can view it from the hotel corridors to the right side. Again the space is "sanctified" with (plastic) stained glass. Note the fact that that the patterns and depictions in the stained glass are haphazard and unbalanced. It is just there for effect.
This is Trinity Cathedral, in Italian of course, and located in Japan. Strangely it is actually neo French Gothic Revival and not Italian in the least.
Possibly in the loosest sense of the word. They are not churches. They are not RCC, EOC, Lutheran, Anglican, Anabaptist, or Arminian. They are an homage to the pervasiveness of American Christian buildings. The form of wedding service performed in Japanese "Christian" chapels follows that of standard American Protestant worship books, albeit that the officiant is not a Christian nor are any of the participants and guests.
That said, there are many Reformed meetinghouses which survive today without any church meeting in them, but as historic monuments. The question comes down to what constitutes a Reformed meeting house. If, for example, a Reformed congregation must have used it at some point in its history, but it was also used by other various congregations, as many such meeting houses have been, does qualify?