Some images of Victoria Park I found on line, I saw that 7 of them lined up, so I have joined them together.
Judging by the cars, I would say late 1950s to early 1960s.
Must be after 1957, if that's when Victoria Park opened.
Causeway Bay is not an area I am familiar with.
Of note, there is a "canal" of water in the center, that stretches as far as the car park. To the left we have St Pauls Convent School.