There are quire a few attractions at Hong Kong Park, one that feels a bit out of place is the Olympic Square situated between the Conservatory and Tai Chi Garden. This is a small and open amphitheatre with seating capacity for around 880 people that is backed with a colonnade has the Olympic Rings at its entrance.
The stage area is open and you can visit it freely. Occasionally, small events and performances are held here but for the most part it is just a sitting area nowadays, where locals enjoy their lunch or take a break to read the paper while in the park.
You can conveniently see the Olympic Square while making your way between other attractions within the park. If you are looking for more interesting place to take a seat and rest, try the benches and area around the lakes nearby, it is much more attractive and interesting there.