Old town Riga is largest city in Baltic states situated on Latvias Baltic Sea coast on the river mouth of River Daugava, Riga is under UNESCO World Heritage Site because its historic centre and wonderful Art Nouveau buildings which are some of the best in the world, the Art Nouveau buildings are situated in central Riga where are whole streets in wonderfully decorative houses, one of the most beautiful Art Nouveau highlights is the facade of the School of Economics, the Three Brothers is medieval dwelling houses and the Latvan…