Riga:
the capital of Latvia, is situated on the Baltic Sea coast on the mouth of the River Daugava. The Historic Centre of Riga has been declared a UNESCO World Heritage Site, and the city is particularly notable for its extensive Art Nouveau (Jugendstil) architecture, comparable in significance only with Vienna, Prague and Barcelona. The Dome Cathedral, considered the largest church in the Baltic states. Riga Castle (Rigas Pils), which houses the Museum of Latvian History and the Museum of Foreign Art. The Powder Tower (Pulvertornis), the only tower that remains from the city wall. The Latvian Museum of War is located inside.