Hi bytara. Is here realy a shop shop=doors with the English name=Barrier gate?
Did you mean an additional tag to the Waterpoort? 
This is already mapped in OSM. 

https://wiki.openstreetmap.org/wiki/Tag:shop%3Ddoors

It looks like tagging for the render to get an icon from a door?

Greetz,
eggie

Greetz,
eggie

