Cuddly koalas and bouncing kangaroos scream Australia, but this kid-friendly, geographically diverse country has mountains, forests, vast deserts and more than 21,000 miles of coastline to entertain families. Sydney, the ultramodern capital, has some of the best activities and beaches, and the Great Barrier Reef, the world’s largest coral reef, is another must-see for a family vacation in Australia. If you’re looking for off-the-beaten-path adventure, rent a camper vans and trek across the outback to visit Ayers Rock and learn about aboriginal history. Kid-friendly hotels in Australia range from beach bungalows to modern high-rise chains with amenities for all ages.