Riga is the capital of Latvia.
The approximately 640,000 inhabitants of Riga make up one-third of the population of Latvia and makes it the largest city in the Baltic States. Riga is famous for its Old Town (Vecrīga) and city center (Centrs), in which over 800 buildings are of the Art Nouveau (aka Jugendstil) style of architecture. The old town of Riga is a UNESCO World Heritage Site. The Art Nouveau style involves intricate building facades, with carvings of flowers and mythological creatures, and ornate doorways and windows. Much of the old town was either destroyed by fire or destroyed by the Germans in World War II and remained in ruins until it was rebuilt in the late 1990s, mainly to make Riga attractive as a tourist destination. Riga is also popular due to its nightlife and discount airlines that offer cheap flights to/from much of Europe. Riga is bisected by the river Daugava. Old (medieval) town is in the center of the city on the east side of the river. It is surrounded by a ring of ~19th -- early 20th century architecture, followed by a mix of private 2-floor house districts (many also pre-WW2) and Soviet-era 5-18 floor apartment districts, with an occasional factory (especially near railroad lines). The term "centre" loosely refers to quite a large area around Old town limited by the river to the west, the railroad lines to the east and south, and without a definite boundary to the north.