Catedral de Santa María de Burgos (Cathedral of Saint Mary of Burgos) , Castilla y León, Spain. Gothic-style Roman Catholic cathedral dedicated to the Virgin Mary. Its construction began in It was declared a World Heritage Site by UNESCO in
Palau de la Musica Catalana, Barcelona Catalonia, Spain, (Palace of Catalan Music) is a concert hall designed in the Catalan modernista style by the architect Lluís Domènech i Montaner. It was built between 1905 and and is a UNESCO World Heritage Site.