Spain, Catalonia, Barcelona, Castell dels Tres Dragons built for the 1888 Universal Exhibition now housing the Museum of Natural Science and Zoological Museum in Parc de la Ciutadella in the Old Town district.

spain spanish catalonia cataluyna catalan barcelona barca city urban europe european espainia espana espanha espanya holiday vacation travel tourism tourist destination old town ciutat vella museum castel del tres dragons expo natural science zoological architecture three dragons castle parc de la ciutdella park