BuddyPress.org

gPress adds new geo-relevant layers to WordPress, allowing you to create your own location-based services or to keep track of your own personal geo-tagged journies. Even in its beta state, you can presently geo-tag posts using native WordPress Mobile Applications, or create new geo-located places using custom post types, featured images and descriptions, add geoRSS functionality and integrated with BuddyPress and Foursquare…
https://wordpress.org/extend/plugins/gpress/