One of the three Baltic countries, Estonia and Helsinki, across the sea, this former Soviet Union republic, I have heard very little before, the two-hour ferry arrived in their capital Tallinn, this is an authentic The medieval city, cobbled alleys, antique metal street lamps, Gothic church steeples and medieval squares, is the only city in Northern Europe that maintains the medieval appearance and style. In the short two hours of the evening, it was impossible to walk in the ancient city square, and all kinds of special products were fascinating.