[OSM-talk-be] Invisible castles

[Ben Laenen]

On Monday 18 August 2014 14:58:22 Erik Beerten wrote:
> I was looking on some OSM based maps for a precise location of a castle
> but I couldn't find it.
> I checked another one that couldn't be found either.
> Both are the type of castles surrounded by water but the map only shows
> the water not the building in the middle.
> Annexes as sheds in the neighbourhood are visible on the map.
>
> (...)
>
> The conclusion is that it is necessary to add a building tag as
> 'building = residential'  if it is still lived in or another
> denomination according to the actual use of it.

It's just what Mapnik decides to show on its map, there are other renderings, 
like http://opentopomap.org/#map=15/51.00633/5.31934 that have special symbols 
for castles.

The most detailed way of mapping a castle would be outlining the building 
contours, and then add the historic=castle tag on that building. It'll then 
show up on Mapnik since it has building=yes, but still no special castle 
symbol.

Greetings
Ben