Enjoy Tallinn. Next You will see Helsinki (normal XIX centry city, can not be compered with Tallinn), and after Helsinki only forest and rock
And make sure to take as many pictures of Tallinn as You can when You will be on a ferry to Finland. The view is specacular (it was for me anyway, but when I have seen it, I was returning from Nordcape- 36 days without any historical cities/churches/ etc. only nature).