The Blue Lagoon is an indoor waterpark near Canaston Bridge in Pembrokeshire, Wales. The Blue Lagoon is located in the Bluestone holiday village. It was opened in summer 2008.
The building is one of the largest waterparks in Wales at 90m long by 40m wide. The roof structure is constructed of timber frame, covered in wood tiles and two layers of transparent plastic and shaped like an upturned Cleddau coracle.