Walking the ramparts — The great pleasure of Galle is simply walking the fort walls — a near-continuous circuit of coral-and-granite ramparts around the old town, past bastions, the lighthouse and the sea on three sides. It's the classic thing to do at sunset, when the light turns golden, local families promenade, and boys hurl themselves off the walls into the sea below. Do the full loop, stop at Flag Rock for the sunset, and let the fort reveal itself from its edges.
The colonial old town — Inside the walls, the fort is a maze of low, deep-eaved Dutch and British colonial houses on a grid of quiet streets, gently restored into boutique hotels, galleries, cafés and gem and craft shops. Wander the lanes past the Dutch Reformed Church, the old warehouses (one now the Maritime Museum), the mosque and the churches, and browse the boutiques. It's a living, layered town — Sinhalese, Muslim, Tamil and colonial — best explored slowly on foot, with plenty of café stops.
Beaches and the ocean — Galle is the gateway to Sri Lanka's south coast, and the ocean is never far. A short tuk-tuk ride reaches the sheltered curve of Unawatuna and quieter coves for a swim, the stilt fishermen perched on their poles offshore (a genuine tradition, though now partly performed for tourists), and, further along, the surf and whale-watching of Mirissa. Between the fort and the beach, the south-coast rhythm of sea, seafood and sun is the other half of a Galle visit.
Southern flavours — Galle eats superb southern-Sri Lankan food — rice and curry with fiery sambols and coconut, fresh seafood and crab, hoppers (bowl-shaped fermented pancakes) and string hoppers, kottu roti chopped on a hot griddle, and short eats from the bakeries. The fort's boutique cafés add cosmopolitan touches and good coffee; the town market and beach shacks the authentic, cheap end. Eat a proper rice and curry, crack a Sri Lankan crab, and finish with a king coconut.