THE ESPLANADE LAGOON Open every day from dawn to after dark, the waterfront Esplanade Lagoon is one of Cairns' biggest attractions. And it’s completely free. A saltwater lagoon-style swimming pool surrounded by landscaped parklands is patrolled by lifeguards. Take part in one of the fun fitness classes (like waterbased Zumba or aqua aerobics), walk or cycle the boardwalks, or feast on an Aussie barbecue at one of the free gas-fired barbies. If you’d rather not self-cater, there’s countless restaurants from casual to fine dining along the Esplanade and marina boardwalk. See cairns.qld.gov.au.