2016 is the 150th Anniversary of the opening of the Herculaneum Dock. A timeline for the Herculaneum Dock on which City Quay, Columbus Quay and Armstrong Quay have been built is below:

1866 first two graving docks opened

1876 third graving dock opened

1878 Casemates constructed

1881 dock enlarged

1902 fourth graving dock opened

1972 Herculaneum Dock closed

2004 site sold to David McLean Homes for the construction of City Quay

Wickipedia entry: Herculaneum Dock

Herculaneum Dock in 1907