Holy wells and healing springs go back into history, and are still with us now. Maybe our belief in them has been tempered by the cynicism of the modern age, but many people still believe in them—and still resort to them.
Here is an interesting site that not only tells us all about the subject, but takes us to numerous wells and springs. There is also an interesting section about London’s Roman baths. Enjoy.
And here is another WordPress site—part of it anyway—which deals with the famous St Winifride’s Well, which is pictured above.