Sitting on northeastern Sri Lanka, Trincomalee is a historic port city famous for its gorgeous beaches, towering temples, and majestic forts. The first stop in this coastal city should be Fort Frederick, a historical landmark built in the 1600s. At present, the fort is partly used by the Sri Lankan military and is open to the public as well. It's the best place to watch the sunset over the Indian ocean. Climb a cliff inside fort Frederick to reach the famed Koneswaram temple, a revered pilgrimage shrine for the Hindus. Learn about the country's maritime history at the Naval History museum through varied exhibits and audiovisual presentations. If you always wanted to try snorkelling then Pigeon Island National Park is the perfect place. The national park is home to endangered rock pigeons and stunning rock formations.