(Isle of Skye fairy pool) SCOTLAND Celtic mythology emerged from Ireland, Scotland, and Wales. The geography of all three of these places include being surrounded by water, with a lot of pools and lakes such as the one seen above.
Go on a fairy tour of Scotland and Ireland. And I'm sure there would be other interesting catches, even if fairies prove elusive. (this is the Isle of Skye in Scotland - check out Fairy Glen Tourism, Scotland, Next Trip Tourism)