This photo, taken in 1936, shows "Garden / 二兵頭花園" in the 1957 Map of the Hong Kong northshore - https://gwulo.com/node/35960#12/22.2742/114.1788/Map_by_OSM-1957_HK/100 .
Its Chinese name was how we called it in those days until it was changed to the present "Hong Kong Zoological and Botanical Garden". Its literal translation is Second-in-Command Army Flower Garden, but we dropped off the number in common conversation. Wonder who was the top boss! More about this garden in Connections-Reference listed below.
From here and before the invasion of tall vegetation and high-rises, one could see far and the mansions up the hill. I had the opportunity to climb up the two observation towers several years ago. The view is no longer the same, as are many other places in Hong Kong.
Photo source: uwants.com - post #2354 by reader 4rex - http://www.uwants.com/viewthread.php?tid=14833421&page=157#pid217224361