Mention Tallinn and some might scramble to look up in which country this city is located. Some might even have only a fuzzy idea where exactly Estonia is. It is a nation that has progressed very well after independence from Russia and established itself as one of the most digitally advanced countries in the world.
If you are visiting Helsinki in Finland and have time, do not miss taking a ferry across to Tallinn. Be sure you know exactly from which port the ferry is leaving. My partner and I mistook the two and had to take a taxi from the wrong one to the right one. Luckily we were early.