Tower Mill, Observatory, Wickham Terrace, Brisbane

One of the oldest convict built structures in Brisbane, Queensland, it was constructed in 1828 for the purpose of wheat and corn processing and from 1855 as a signal station to communicate shipping news between the entrance of the Brisbane River and CBD. Early radio, telephony and television communication research was underway within the tower by the 1920s. Today, this tower mill is the centrepiece of Observatory Park, Brisbane, Queensland and was heritage listed in 1992.