St. Ann's Well Gardens, Hove
Brighton and Hove, United Kingdom
St. Ann's Well Gardens is a park in Hove, East Sussex, about half a mile from the shore. The park is renowned for its chalybeate (iron bearing) spring, which is now named St. Ann's Well. In this case, the name "St. Ann" does not refer to any saint. Instead, the name was apparently based on a myth of Annafrieda, a Saxon lady whose lover was murdered. Her tears miraculously became the Chalybeate Spring which is now called St. Ann's Well.
Park data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).