I had heard about this place for a long time. Yesterday, I finally managed to visit it. Its location is not very well documented on any Internet site. This is the spiral staircase at Fort Canning. One can easily access it from the Fort Canning Park Tree tunnel that runs from the Dhoby Ghaut bus stop, or a short walk from car park C just below the Fort Canning hotel.
This is a favourite spot for photographers, and Instagram influencers who congregate there to get the perfect shot of themselves sitting along the spiral railing of the staircase.