In 1880 - 82 Fort Lytton was constructed adjacent to and north of the Customs Reserve .
In 1877 , Lytton was identified as the site for a defence fortification to guard the mouth of the Brisbane River .
In 1880 - 82 Lytton   was constructed adjacent to and north of the Customs Reserve .
In 1877 , Lytton was identified as the site for a defence fortification to guard the mouth of the Brisbane River .