I agree and mispoke about adding it to only the POI layer as places /
landmarks can span across the places / landuse / POI and other mapzen
vector layers. Our current use-case is that we're extracting points of
interest and places by using Mapzens vector tile service. In the event
where an openstreetmap POI has a wikipedia link, we provide users with the
ability to request for more information which is basically the first
paragraph from the intro in Wikipedia. I'm currently using Overpass as a
short-term workaround, until the vector service has the wikipedia tags
available. Great point on coalescing the variant wiki link tags into a
single field(i.e. wikipedia / wikipedia:es) similar to what you're doing
with the 'kind' field. This would be such an incredibly useful data set to
include in the vector tile service. My only concern about including a "more
info" link is that if the media wiki API service hosts changes then all the
links break, and also dealing with the multiple output types. Including the
wikipedia page title reference(s) into the Mapzen vector service would be a
great start.

All the best,

Erik

On Tue, Jun 14, 2016 at 6:31 AM, Matt Amos notifications@github.com wrote:

Examples:

WMF offices http://www.openstreetmap.org/node/2817389220

Madison square park http://www.openstreetmap.org/way/22899286

Admiral Farragut Memorial
http://www.openstreetmap.org/node/1251496241

The statue of Liberty http://www.openstreetmap.org/way/32965412 -
note that this also has wikipedia:es language variants, and a wikidata
tag. We should bring those through too.

FDR Drive http://www.openstreetmap.org/relation/109736 - not a
POI, but has wikipedia info.

One interesting example that I expected to find, but did not appear to
have a wikipedia tag, was the famous bit of Lombard
http://www.openstreetmap.org/way/402111597. Opportunity for improvement.

I assume the use-case for the tags are to show extra information about the
history or context of a particular object. To have a "more info" link which
opens up a wikipedia page in another tab, for example. Or just to make it
easier to collate the data for bundling into an offline tourist map,
perhaps?

I think we should add this to all layers, although on layers other than
POIs we probably want to remove the tag at mid zooms to avoid getting in
the way of merging.

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Add wikidata id concordance to features #858

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