Lord Howe Island
Lord Howe Island feels like a secret world. Only 400 visitors are allowed at any one time, so the beaches, walking trails, and lagoon remain peaceful. The island is a UNESCO World Heritage site for both nature and rare birdlife, and the snorkelling inside the reef is world-class. It is the kind of place where you ride a bicycle everywhere and watch the sunset from the same beach every evening.
Why it is a hidden gem: Strict visitor caps keep it uncrowded and pristine.
How to get there: Flights from Sydney and Brisbane take around two hours.