Brynsiencyn is a village on the Isle of Anglesey in North Wales, 6 miles from Menai Bridge.
It is situated on the Menai Strait opposite the town of Caernarfon.
Anglesey Sea Zoo is a popular attraction. A kind of aquarium, it exclusively features creatures which are found around the British coast. There is a breeding aspect, and those who are born at the zoo are periodically introduced to their natural habitat.
Next door, Anglesey Sea Salt produces sea salt, and there is a visitor centre showing aspects of the production.