Helsinki is very small, it is recommended that netizens walk on foot, you will see many Gothic architecture, style is of course very different from the domestic. One of the most famous is St. John's Church, which is magnificent in architecture and novel in design. It's worth seeing. Small cities have a world-renowned University of Helsinki, which is also recommended. Seafood is the best choice to go to Helsinki. You can go to the city hall's food market. It's fresh, cheap and very delicious.