St John's Pro-Cathedral, Roman Catholic cathedral in Perth, Australia

St John's Pro-Cathedral is a brick building at 18 Victoria Avenue, covered in lime render painted ochre to match the original colour. Its shingled gable roof shelters arched windows along the north and south facades, where buttresses stand at regular intervals. A reconstructed portico marks the western end, and a lean-to extension with square four-paned windows sits at the eastern end of the southern facade.

The foundation stone was laid in 1844, marking the beginning of Western Australia's first Roman Catholic church. This structure became an important part of the colony's religious development during its early years.

This building served the Catholic community as a central place of worship until 1865, when another cathedral assumed that role. Today, visitors can see how it reflects the religious life and architectural traditions of Perth's early Catholic population.

The building stands at 18 Victoria Avenue, not Victoria Square, in central Perth and is easy to reach on foot. Restoration between 1979 and 1980 removed later additions before the Catholic Church adapted it as a museum; no German-language tours are documented, so check opening times directly.

The building houses an original chair that Bishop Brady brought from Europe when he arrived in 1846. This personal piece of furniture tells the story of the early Catholic leadership in the Australian colony.