The Fort Canning Tree Tunnel is a popular photo spot in Singapore, known for its iconic spiral staircase and the stunning view of the Yellow Rain Tree from below. It's a hotspot for wedding photos and nature photographers, so if you want to snap your own pics, be prepared to join the "queue" early in the morning. You can access the tunnel from Dhoby Ghaut MRT or Bencoolen MRT, and don't forget to check out other photogenic spots like the Sang Nila Utama Garden and Fort Gate while you're there!