The answer to the crossword question ‘Capital on the Daugava River is RIGA’ is a city located in the country of Latvia, which is situated in Northern Europe. Riga, which is also the largest city in Latvia, is the capital of the country and serves as a major economic, cultural, and political center. The city is situated on the banks of the Daugava River, which is the longest river in Latvia, and is known for its rich history, diverse architecture, and vibrant cultural scene. Riga is home to many museums, galleries, and theaters, as well as restaurants, bars, and cafes serving traditional Latvian cuisine. The city is also known for its historic Old Town, which has been designated as a UNESCO World Heritage site, and its Art Nouveau architecture, which is some of the finest in the world.