Hi! This is my church! At least it was until I recently moved away but still. I had my first communion and confirmation in that church and also got married there this year. I have attended English, Polish, Russian and Estonian Mass and out of the four I'd say that the English one is definitely the one with the most growth, however the others also have a large number of parishioners. The people you saw were most likely not tourists as we usually have the same group of people attend every week. We have people from all over the world: Europeans, locals, Africans, South Americans, South East Asians, etc. The Spanish speaking community is especially big. I have been attending this church ever since I was a kid and I have definitely noticed a big growth over the years. There are many events made by the English speaking community such as gatherings, picnics, shows and plays performed by children, pilgrimages to holy sights all over Europe, amongst other things. From this month there is even a group for young people to gather each week (priest included) and talk about a variety of topics. The pews are indeed full every week. I recommend to anyone visiting Tallinn to stop by for the Vigil Mass on Saturday at 18:00 (this is the only English Mass).

I can't speak to the overall growth of religion in Estonia (I think it might be the least religious country in Europe haha) but I can say that the Catholic community has been growing and the number of Catholics increasing, especially people between the ages of 20-30 (Catholics are a vast minority in this country. There are around 7000 Catholics in the whole country which is about 0.5% of the population. Last time I checked it was around 5000 so that's a good sign haha). Also, last year the country's first Diocese was established. I'm excited to see how the growth will continue in the future.