The mysterious Pool of Siloam, on the outskirts of the small coastal town of Beachport in South Australia, reportedly boasts waters seven times more salty than the ocean. What does that mean for visitors? Besides the curiosity factor, you’ll also enjoy gravity-defying buoyancy; fun for grown-ups and perfect for children taking their first wobbly dog-paddles. Named after its more famous counterpart in Jerusalem, the Pool of Siloam is fed by underground springs, meaning the water level remains unaffected by the tides. See southaustralia.com for more information.