Nice photos! There's a lot to see in Riga. I was there for a week and didn't visit these places. I went to the national art museum, the occupation museum, the beach, the market and a brand new gym. But I mostly enjoyed walking around, looking at the historical buildings in the old city and the Jugendstil/Art Noveau buildings in the Centrs neighborhood.
And I didn't visit any of the places that you mentioned 🙂 I also enjoyed walking around and looking at the historical buildings. I must admit that we were surprised with how pretty the city was. We didn't expect it to be so nice.
Thank you for stopping by!