St. Monica's Cathedral is considered one of the most important monuments in Cairns, and its founding dates back to 1927 AD. It is a Roman Catholic church in Cairns. It is characterized by a simple wooden design from the inside with many stained glass windows that give it an eye-catching scene, in addition to the ornate arches above it. its walls, and tourists can take a tour inside it to learn about its history and enjoy its architectural details.