Dominating the city skyline, you can’t fail to notice it: the Imperial Castle. At the time of the Holy Roman Empire, the castle was occasionally home to each of the emperors, and in the Middle Ages, it was one of the most important royal palaces. The sights here include the new castle museum, the palace with the emperor’s living quarters, the Romanesque Double Chapel, the Deep Well and the Sinwell Tower. The neighbouring garden is a must-see too. It might be small, but it’s a welcome contrast to the hustle and bustle of the city and is popular with residents too. The castle's garden is open from April to October.

The Solitary Islands Marine Park is the third largest marine protected area in New South Wales, covering a total area of 71,000 hectares and stretching along 75 kilometres of coastline from Coffs Harbour north to the Sandon River mouth. The park is home to an incredible diversity of marine life, including tropical, temperate, and sub-tropical species of fish, coral, and algae, making it a major attraction for divers. Signage throughout the park indicates where specific activities such as diving, fishing, and collecting are permitted. Within its boundaries, the marine park includes tidal waters, estuaries, beaches, and headlands, all protected by a special zoning scheme designed to conserve fish habitats and preserve the area's natural beauty.

No trip to Cairns would be complete without a day spent exploring the Great Barrier Reef. Composed of roughly 3,000 individual reefs, nearly 900 islands and coral cays, and home to an unparalleled array of marine life, Australia's Great Barrier Reef is one of the richest and most complex natural ecosystems on Earth. Whether you're a diver, snorkeler, or nature lover, there are plenty of reasons to include this natural world wonder in your Australia travel itinerary.

Pjaca Clock Tower imposes its figure with its impressive 1700 years of history. The tower's impressive height can be walked up a steep stairway that culminates in a breath-taking view of the Old Town and its vibrant flow of people. The tower features a 24-hour clock face signed with Roman numerals.