harg
Some nice additions you're noting for this area. I must visit the HR Museum some day :)
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Did you know you can join OSM as an editor and add to the map yourself, rather than just writing notes about them and hoping somebody else will pick them up.
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See http://wiki.openstreetmap.org/wiki/Beginners%27_guide for details. But if you prefer to add notes, keep doing that -- I'll add them when I manage to visit, if nobody has done it first.