This is a tracking category.

It is used to build and maintain lists of pages—primarily for the sake of the lists themselves and their use in article and category maintenance. It is not part of the encyclopedia's categorization scheme.

More information:

This category is hidden on its member pages—unless the corresponding user preference is set.
These categories are used to track, build and organize lists of pages needing "attention en masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience.
These categories also serve to aggregate members of several lists or sub-categories into a larger, more efficient list (discriminated by classifications).
Typically, tracking categories are automatically populated by templates invoked in pages or by the MediaWiki software (see Special:TrackingCategories for an overview of the latter).

Administrators: Please do not delete this category as empty!
This category may be empty occasionally or even most of the time.

If this category has 19 items or more, it will report as a backlog. (recount)

Active Wiki Fixup Projects AI Cleanup Article Rescue Squadron Bluelink patrol Broken section links Check Wikipedia Cleanup Dead-end pages Disambig pages w/ links Fix common mistakes Free images to Commons Geo-coordinates Missing articles Most-wanted articles Notability Orphaned articles Reliability Requested articles Single editor Spell check Stubsensor Articles for improvement Uncategorised articles Unreferenced articles Wikification needed Main · Inactive · Mini .mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}v t e

The articles need to have the relevant coordinates (latitude;longitude) added. Please see Wikipedia:WikiProject Geographical coordinates for guidance on how to do so.

Please remove the ((Coord missing)) template from the article and/or talk page when you have done so. Thank you.

Note: The Maybe-Checker tool lists articles without coordinates from any category you're interested in improving, without the need to tag and untag articles.

Wikimedia Commons has media related to Location possible.