 Blacket designed over 100 churches, of which over 30 were small churches often in rural locations for small congregations.Designed in 1847 and erected between 1857 and 1859, St John's Church at Wilberforce is intact in its form and setting and a fine example of Blacket's early, small rural churches.The church has a rare example of a vertical sundial in Australia, the work of the former schoolmaster, John Wenban.