The old town of Sipoo, which was once completely Swedish-speaking, still has a mixture of Finnish and Swedish-speaking inhabitants. The area was inhabited as early as the Stone and Bronze Ages, as archaeological finds show. Sipoo is particularly popular because of its proximity to the Sipoonkorpi National Park. Along marked paths you can walk through the spectacular nature or use the local cycle path network. Water lovers can paddle on the river of the same name and visit the ruins of the old Sibbesborg at the mouth of the river. Legend has it that the fortress was built by Vikings, but it is more likely that it was built by Danish sailors.