Labrador Nature Reserve

The mainland's only coastal park with a rocky sea cliff, Labrador packs a lot into a compact, easy walk: a clifftop promenade with sea views over Keppel Harbour, a mangrove boardwalk and — for history buffs — the well-preserved relics of a WWII coastal artillery fort, including gun emplacements, a powder magazine and a network of tunnels (Fort Pasir Panjang). A short, shaded loop links it all, and you can extend along the Berlayer Creek boardwalk toward the harbour. It's free, rarely crowded and a quiet contrast to the nearby buzz of HarbourFront and Sentosa. Good for a gentle morning stroll; bring water and watch for monkeys.