Caulfield Park is a curated space, and these photos are only half of it. There are three playgrounds, a number of ovals, cricket nets, basketball hoops, exercise stations, the rotunda, numerous picnic spots with cover and electric bbqs, a lake, lawn bowls club, tennis courts, public toilets, off-leash dog area, and lots of parking on the surrounding roads and limited parking within the grounds.
A mostly gravel path surrounds the park; it's about 2 km in length and is populated by runners, joggers, people walking, kids on bikes, and the occasional wheelchair. There are also paths through the park and the ones toward the Hawthorn Road side are somewhat covered by tree canopy. That area also has most of the lawn, making it a popular spot in nice weather for sitting on blankets, lying in the grassy, or undertaking various types of exercise (very occasionally trapeze ropes are strung up between trunks of trees and performers with exquisite balance practice not falling off).
The landscape is mostly flat, with a hillock in the south east corner the only substantial rise in the terrain, so walking around is not challenging. And if you are in need of refreshment, the cafes on Hawthorn Road are close-by. As are a number of tram stops and even Malvern Station, which makes Caulfield Park public transport accessible.
Overall, this is a well used and well tended space for people of all ages.