Soumonina Island Helsinki Finland

This world heritage is worth visiting. So easy via the regular ferry service (15 mins) near the harbour market. As the website says, ‘Beautiful all year round’. Autumn is certainly one of the better seasons. Do take the guided tour if your day coincides (more frequent in summer). Euro10 well spent and your reward is a passionate guide with more of the sites visited in less time than you would take on your own! Soumonina Island

Do allow time for the Brewery Restaurant situated just as you disembark. One can time things to have lunch, then walk! Helsinki has a thriving micro brewery scene.