Regarding to some sources (Markkinointi & Mainonta) second Starbucks should be opened at Akateeminen Kirjakauppa which is part of Stockmann Group. Biggest Akateeminen is located on the corner of Pohjois-Esplanadi and Keskuskatu. There are already two cafes in book store but Starbucks might change the situation.
https://reijosfood.com/2012/05/23/starbucks-has-opened-in-finland/
Reijosfood 
The French Riviera just got its first Starbucks in a shopping center – I hope they don’t proliferate as much as McDonalds has here though.
http://twentyfourseveninfrance.com/2012/08/06/1st-starbucks-on-the-cote-dazur/
Of all the places in the world, I want to visit Helsinki some day! Cheers from the United States 🙂
Thanks for passing by reijosfood.com! Helsinki is great place especially in the summer.