The lagoon will broadly encompass the coast between Mumbles Head in Swansea and Port Talbot.

BBC: An artist's impression of how the lagoon could look

But it abuts a lagoon only a few hundred yards from the coast and is on sandy soil, which facilitates drainage and reduces construction costs.

WSJ: Fairway to Rio: Golf Comes to the Olympic Games

The island sits in the Pacific and is ringed with dramatic cliffs and rocky coast, and has an incredible fantasy volcano filled with a lagoon whose rim you can hike around.

FORBES: The Most Interesting Place in the World