Time of year
This is a large church and is great for a photo. Maybe go in the morning due to the position of the afternoon sun. Worth visiting.
I did not go inside but I am glad that I did not miss the cathedral, there are multiple squares in Riga Old Town, for example, one closer to the river is the one with the famous House of the Black Heads while the square with the Cathedral is a bit more further inside and hidden…
The 16:00 concert was for more then an hour, but what a performance by some solists. This one is a must of you visit Riga and love organ music.
Fine building. We were there at concert. Entrace in other times is not free. Church is in quite good conditon.
If you love music, check if there's a concert happening in the Dom Cathedral while you are there. Get tickets and come listen. There are many other venues but if there an organ or choral concert happening in the Doma, that is a special treat.