Palace of Catalan Music, one of the most beautiful concert halls in the world.
Spain, Barcelona, Oct. 2009
The Palau de la Música Catalana is a concert hall designed in the Catalan modernista style by the architect Lluís Domènech i Montaner. It was built between 1905 and 1908. In 1997 it was declared a UNESCO World Heritage Site.
http://en.wikipedia.org/wiki/Palau_de_la_M%C3%BAsica_Catalana