The church has an early 14th-century tower with clasping flying buttresses to the lower stages and angled buttresses above.
The name originates from Harlaxton House, probably named for Harlaxton in Lincolnshire, England, and built in 1869 in what is now Munro Street as the residence of Francis Thomas Gregory.
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Apart from the quarries, the suburb is home to the Willowburn railway marshalling yard and the original Darling Downs Bacon Company established as a co-operative in 1911 (later KR Castlemaine).
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The home was later used as the summer residence for Lord Lamington who served as Governor of Queensland from 1896 until 1901.