Riga, officially Riga State City, is the capital, primate, and largest city of Latvia and the second largest in the Baltics. Home to 588,911 inhabitants, the city accounts for a third of Latvia's total population. The population of Riga metropolitan area, which stretches beyond the city limits, is estimated at 847,162. The city lies on the Gulf of Riga at the mouth of the Daugava river where it meets the Baltic Sea. Riga's territory covers 307.17 km2 (118.60 sq mi) and lies 1–10 m (3–33 ft) above sea level on a flat and sandy plain.
Summary from Wikipedia.