Castell dels Tres Dragons Barcelona. Temporarily closed. Castillo de los Tres Dragones. Modernist building in corner of Parc de la Ciutadella in Barcelona called "Three Dragons Castle." It was built between 1887-1888 as a Café-Restaurant by Catalan modernist architect Domènech i Montaner in 1887 built for the Barcelona Universal Exhibition in 1888.  The name is derived from the title of a comedy play by Serafí Pitarra. From 1920 until 2010 the Castell dels Tres Dragons housed part of the Barcelona Zoology Museum which was part of Barcelona's Museum of Natural Sciences. but the contents were moved to the new Museu Blau and the Castell dels Tres Dragons is now closed to the public