Dublin

Dublin was a major city in Ireland, on Earth.

As of 2372, Miles O'Brien's family lived there. When Odo was traveling to Earth, Miles asked him to stop by and visit his family, because he was worried about them after the bombing of the Antwerp Conference. 
 * In the shooting script, was mentioned to be the home of O'Brien's parents rather than Dublin.

According to Michael Sullivan, one "can see all the way to Dublin" from the top the battlement of Castle O'Dell, located near the village of Fair Haven.