Caption:
Gatchina near St. Petersburg (Russia), Marble Palace. (built from 1766-72 for Grigorij Count Orlov by Catherine II; architect: Antonio Rinaldi (1709-1754). Great military office of Nicholas I in the Armoury Block. Watercolour, 1862, by Eduard Petrovich Hau (1807-1887), 29 × 35 cm. Gatchina, Marble Palace.