Tallinn 2011 - European Capital of Culture - By the way, The 3T idea is quite clever, isn't it? In case you don't know, there's a No 3T tram line in Helsinki.
Tram of Helsinki (2) - Tram Travels
Tram system helsinki hi-res stock photography and images - Alamy
Tram stop in helsinki hi-res stock photography and images - Alamy
Helsinki Tram System in Helsinki, Finland - YouTube
3B/3T Helsinki Sightseeing Guides | Food Trippin'
History of the Helsinki tram system - Wikipedia
Transit Maps: Submission – Unofficial Map of Helsinki Tram Network by Elmo Allén