Passport for travel to Europe

Tallinn the capital city is located just accross the Gulf of Finland from Helsinki (not incidated on the map but just below the "D" in Finland).  By ferry boat the distance is about 42 miles.  Estonia is part of the European Union and uses the Euro unlike the other Baltic nations who still use their national currency and are only provisional members of the EU.  Once you have cleared immigration and customs in any Euroean country that is one of the 17 member countries you are able to travel to any member EU country much as we in North America can travel between states and provinces.

Not sure who is reading this so best to note that anyone traveling to Europe from anywhere else in the world will need a passport.  In the US the passport forms can be secured at the US post office https://www.usps.com/shop/apply-for-a-passport.htm or completed online at the US State Department http://travel.state.gov/passport/  First time applicants will need to appear in person at a post office to verify identification.
Passports are valid for 10 years and cost $110 plus a small handling fee.  Best to apply early or check and make sure your old passport will still be valid through next July.  You can get them in about 3 weeks or for lots more money you can get them rushed out but why wait?