OpenStreetMaps

• find nearby mappers: http://resultmaps.neis-one.org/oooc?layers=B00FTFFFFT

• overdrive's profile: https://www.openstreetmap.org/user/Over23
• apps for Cell:
  • Apple: https://wiki.openstreetmap.org/wiki/Apple_iOS
• apps for PC:

want to query tag #urbex, or find key abandon:

• https://wiki.openstreetmap.org/wiki/Tag:man_made=works
• https://wiki.openstreetmap.org/wiki/Key:abandoned:

• http://overpass-api.de/
• https://wiki.openstreetmap.org/wiki/Overpass_API
• https://overpass-turbo.eu/

/*
This query looks for nodes, ways and relations 
with the given key.
Choose your region and hit the Run button above!
*/
[out:json][timeout:25];
// gather results
(
  // query part for: “"abandoned:"=*”
  node["abandoned:"]({{bbox}});
  way["abandoned:"]({{bbox}});
  relation["abandoned:"]({{bbox}});
);
// print results
out body;
>;
out skel qt;

seach for gas-station example: https://overpass-turbo.eu/, found: in menu last item: https://wiki.openstreetmap.org/wiki/Tag:amenity%3Dfuel

/*
This query looks for nodes, ways and relations 
with the given key/value combination.
Choose your region and hit the Run button above!
*/
[out:json][timeout:25];
// gather results
(
  // query part for: “amenity=fuel”
  node["amenity"="fuel"]({{bbox}});
  way["amenity"="fuel"]({{bbox}});
  relation["amenity"="fuel"]({{bbox}});
);
// print results
out body;
>;
out skel qt;