Free afternoon in Colombo Galle Face Green or Mount Lavinia for a chill walk and sunset

Different flavors. Galle Face Green is the social heart of Colombo: a kilometer-long oceanfront promenade where every demographic of the city gathers - kids flying kites, couples, joggers, food vendors with isso vade and corn-on-cob carts, families with toddlers, all between 4pm and 7pm. Sunset over the Indian Ocean from here is iconic. Pros: free, vibrant, real Colombo. Cons: busy and a little chaotic. Mount Lavinia (30 min south by tuk-tuk or train) is more relaxed: a longer beach where you can actually walk on sand, the cliffside Mount Lavinia Hotel verandah for a colonial-era sundowner, and the small fishing-village pulse of Mount Lavinia village. Pros: actual swimming-quality beach, quieter, photogenic. Cons: feels removed from "Colombo proper", and the swim quality varies with monsoon. PICK: if first time in Colombo, Galle Face Green wins for the cultural experience; if you want a beach-walk-and-cocktail evening, Mount Lavinia.