Australia boasts a number of the world's foremost attractions and there is truly something for everyone in any of the main cities. Natural sites, man-made spectacles and entertaining parks make up for a larger part of the iconic landmarks. Sydney Opera House, which took more than 14 years in construction, is one of the most remarkable pieces of architecture in the world. Mother Nature amazes everyone once more with the implausible beauty of Cradle Mountain-Lake St. Clair National Park. There are more to see and do in this sixth largest country of the world.