This joint stamp issue by Russia and Spain is dedicated to the famous architectural works of art in both countries - Church of the Savior on Spilled Blood in St. Petersburg (Russia) and Episcopal Palace in Astorga (Spain).
The Church of the Savior on Spilled Blood is one of the main sights of St. Petersburg. This Church was built between 1883 and 1907 on the site where Tsar Alexander II was assassinated and was dedicated in his memory.
The Episcopal Palace of Astorga is a building by the famous Catalan architect Antoni Gaudi. It was built between 1889 and 1913. Designed in the Catalan Modernism style, it is one of only three buildings by Gaudi outside Catalonia.