The £2m Tricorn Centre in April 1966, shortly before it was officially opened.
There were to be 48 shops, a supermarket and a department store, while the city’s wholesale fruit and vegetable market was to be held on the first floor.
The architect, Owen Luder, intended it should have the atmosphere of a casbah – a walled citadel found in many north African cities and towns.
A recession began just as it was finished, however. Few shops were let and the building decayed, attracting increasing dislike among some Portsmouth people.
It was demolished in 2004 and replaced with a surface car park.