Waymarks in this category will include the many religious or sacred wells around the World. A large number of the Christian wells were reputed to have a much earlier sacred significances and were hi-jacked or "sainted" by the early Christian Church.
Many of the other world religions also have sacred wells which are still venerated to this day.
Most counties in Britain have Holy wells, some have more than their fair share it would seem. Cornwall, for example, in 1895 had about ninety wells still in existence or remembered by the local inhabitants. There are some fine examples of restored wells in the county such as St Clether's Well and Dupath Well. Ireland has a wealth of Holy wells of Celtic origin. Tobar Nalt, Sligo is known to be a sacred place of the Celts, this grove and its holy well were later taken over by St. Patrick and re-dedicated to Christianity. There are Holy wells in many countries of Europe. The well at Lourdes in SW France is still an important shrine to Catholics. There are also many insignificant wells which are not much more than a hole with water trickling out of the ground. All are welcome in this category provided that there is a definite religious or sacred link.
Many wells around the world have folklore attached to them and the water of some had reputed curative powers.
There are quite a few geocaches placed near holy wells. This bookmark list by "Birdman-of-liskatraz" covers many interesting wells.