It is located in the City Hall Saló de la Reina Regent (City Council hall), Barcelona Hispania European Union.
Photo - Dr. Jesus Oliver-Bonjoch who informed me of the location and provided a link to a Wikimedia image showing provenance.
María Cristina is dressed to impress with a bodice drenched in lace and spectacular over- and under-skirts. The stellar pattern on the over-skirt is like the patterns on Worth dresses. Both her over-skirt and under-skirt end in trains.
Keywords: 1892, Masriera i Manovens, Oliver-Bonjoch, María Cristina Habsburg, Archduchess, Queen, Habsburg family, Borbón family, Spanish, straight coiffure, crown, scoop neckline, bertha, lace, tucker, quarter length close sleeves, double-vee waistline, A-line skirt, over-skirt, train, lining, choker necklace, necklace, brooch, bracelets, bows, robes