Let me show to you, the smallest cathedral in the world:

https://en.wikipedia.org/wiki/Church_of_the_Holy_Cross,_Nin

It's not the seat of a bishop any more, but it was in the past (and
churches are often called cathedrals even after they lose the status of a
seat of a bishop).

I wouldn't tag this building=cathedral, even building=church is a bit much.

Janko

uto, 19. pro 2017. u 14:19 Marc Gemis <marc.ge...@gmail.com> napisao je:

> Adam, Martin,
>
> thanks for your input. It seems that one cannot only rely on what one
> sees from the street, or at least not always. Sometimes the name
> (church vs cathedral) has to be used to determine the value for
> building.
> I've seen pubs in all kind of buildings in Belgium, from being located
> in terraced houses, over train stations and villas to old manor
> houses. I doubt there is really a "pub"-building type here.
>
> I guess there will always be cases were we can debate whether a type is X
> or Y.
>
> regards
>
> m.
>
>
>
> On Tue, Dec 19, 2017 at 9:09 AM, Adam Snape <adam.c.sn...@gmail.com>
> wrote:
> > Hi,
> >
> > My own view of the building tag is that it notes what the building looks
> > like to someone on the ground. If it's a fairly generic building then
> > obviously the current use is a fairly good indicator. Something like a
> > church or pub though often still retains the characteristics of that
> type of
> > building even when internally converted. As long as it still externally
> > looks like a church or pub that is what I tag the building as.
> >
> > Adam
> >
> > On 16 Dec 2017 4:35 p.m., "Martin Koppenhoefer" <dieterdre...@gmail.com>
> > wrote:
> >>
> >> sent from a phone
> >>
> >> > On 16. Dec 2017, at 09:39, Marc Gemis <marc.ge...@gmail.com> wrote:
> >> >
> >> > The building page on the wiki [1] lists e.g a church, cathedral and
> >> > chapel.
> >> > But what is the structural difference between a church and a cathedral
> >> > ? I always thought a cathedral is where a bishop leads the messes (or
> >> > something like that).
> >>
> >>
> >> yes, AFAIK a cathedral is the main church of a diocese in certain
> >> denominations like roman-catholic, it is the church where the bishop
> >> or archbishop has his seat, and it is therefore also typically the
> >> biggest and most important church of the area. Structurally you will
> >> find cathedrals in general to be bigger than other churches, although
> >> there can be pretty big churches as well. Technically, "cathedral" is
> >> more a title than a certain type, while there are specific sub-types,
> >> in particular "gothic cathedrals" (mainly in France).
> >>
> >>
> >>
> >> > The wiki page on cathedral tries to avoid this by saying some
> >> > buildings are build as cathedral but without a bishop, without saying
> >> > how one can see the difference between a cathedral and a church.
> >>
> >>
> >> I would leave this decision to the church. If they call it a cathedral
> >> it is one.
> >>
> >>
> >>
> >> > I understand that chapels can be attached to other buildings, but they
> >> > can also be free standing. But how different are the bigs ones then
> >> > from a small church ?
> >>
> >>
> >> chapels might be there for a certain purpose, e.g. on cemeteries or in
> >> baptisteries, or part of a bigger structure (even a train station, an
> >> airport, a hotel, a convent, a hospital or palace). Again, I'd go here
> >> by what it is called  by the church.
> >>
> >>
> >> > I see similar problems with rectangular buildings with one or two
> >> > entrances a couple of floors, a flat roof and a lot of windows. They
> >> > can be schools, commercial, apartments, civic buildings. I guess one
> >> > has to take the interior division into account as well to determine
> >> > the type, not ?
> >>
> >>
> >> residential buildings are typically different from administrative
> >> buildings regarding the unit size and inner organization, entrances,
> >> corridors, stairs, sanitary blocks, etc.. You won't typically have
> >> difficulties telling which kind it is, if you enter. Of course, very
> >> neutral "architecture" like containers might be usable as
> >> (construction site) offices and also as tempory emergency residence.
> >>
> >>
> >>
> >> > So can a commercial building change to a school when the interior wall
> >> > are changed? And if so, why is a church not changed into an apartment
> >> > building when the interior changes ?
> >> >
> >> > Or are we just wishing that building refers to the structure and not
> >> > the function ?
> >> > Or am I overthinking the whole topic ?
> >>
> >>
> >> yes, convertions are generally possible, it depends on economic and
> >> cultural factors if they are done. Some structures are clearly more
> >> universally usable and easier to convert into a different usage then
> >> what they were built for, compared to others. It also depends on the
> >> amount of compromise, an inhabitant is willing to accept, on the
> >> individual lifestyle (some people like living in industrial
> >> buildings), etc.
> >>
> >>
> >> > Those questions came up after I tried to answer a question on a barn
> >> > used as church and community centre on the help website.
> >>
> >>
> >> as you say it is a barn used as a church, I'd say building=barn
> >> If you had said: a barn converted to a church, building=church you
> >> should have considered building=church. ;-)
> >>
> >>
> >> Cheers,
> >> Martin
> >>
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