bRocca al Mare/b is one of the Tallinn's best zoos that is a home to over 5400 animals from 350 different species including polar beers, elephants, buffalo, camels, deer, seals, crocodiles, lions, monkies, hypopotamus, birds, ...
Maybe you would also like the Rocca al Mare open-air museum. The beers are very good and a bottle costs about 13 kroons (about 0.80?). And you should not waste your opportunity to visit Helsinki, I personally think that there is more to ...