You also can use [Overpass API][1] for that purpose. The most A convenient way is to use a currently alpha version of a website for smartphones, [locate_me][2]. I'm sorry it is currently available in German only. Once you have accepted the Geolocation, zoom out "[-]" and pan the map to find your desired region. Choose then "POI > Einkaufen > Lebensmittel" to get the supermarktes supermarkets as blue circles. You can also use the core service of Overpass API, but you need to know the latitude and longitude of your target. The link http://overpass-api.de/api/convert?data=(way\[shop=supermarket\](50.6,7.0,50.8,7.3);>;node\[shop=supermarket\](50.6,7.0,50.8,7.3););out skel;&target=openlayers shows the supermarkets around Bonn, between 50.6 degree North and 50.8 degree North, 7.0 degree East and 7.3 degree East. Please adapt the coordinates to your need or tell in a comment for which region you want to see the supermarktes. [1]: http://overpass-api.de [2]: http://overpass-api.de/locate_me.html

You also can use [Overpass API][1] for that purpose. The most convenient way is to use a currently alpha version of a website for smartphones, [locate_me][2]. I'm sorry it is currently available in German only. Once you have accepted the Geolocation, zoom out "[-]" and pan to find your desired region. Choose then "POI > Einkaufen > Lebensmittel" to get the supermarktes as blue circles. You can also use the core service of Overpass API, but you need to know the latitude and longitude of your target. The link http://overpass-api.de/api/convert?data=(way\[shop=supermarket\](50.6,7.0,50.8,7.3);>;node\[shop=supermarket\](50.6,7.0,50.8,7.3););out skel;&target=openlayers shows the supermarkets around Bonn, between 50.6 degree North and 50.8 degree North, 7.0 degree East and 7.3 degree East. Please adapt the coordinates to your need or tell in a comment for which region you want to see the supermarktes. [1]: http://overpass-api.de [2]: http://overpass-api.de/locate_me.html