The Fort Canning Tree Tunnel is an underground crossing with spiral staircase on the edge of Fort Canning Park. It links Dhoby Ghaut to the park. When one looks up from the bottom of the staircase, one is greeted by an amazing world of lush greenery.
The best time to visit is from 9am to 10am, where the sun's ray shines on the trees above and cast beautiful silhouettes against the staircase wall.