Church

A Church, Clinic, Sanctuary or Revive Pool was a means of reviving party members in the first three Final Fantasy games. Reviving characters in a Church usually costs a small fee. It was later on that Phoenix Downs became the main source of revivification and so the concept of Churches or Revive Pools were scrapped altogether, except as plot devices.

Final Fantasy
Churches (known as Clinics in the North American NES release) are found in all towns and villages in the world map. As the player goes on to towns farther than Cornelia, the cost of reviving party members increases.

Final Fantasy II
Sanctuaries appear in most towns and villages in the world map. They appear as unmarked buildings with statues of a goddess inside. Examining the statue with a KO'ed party members allows him or her to be revived with a meager amount of HP at no cost.

Final Fantasy III
Revive Pools are found in many towns, areas, and castles in the world map. They usually appear along with Healing Springs and have the effect of reviving party members without any cost.