Peter and Paul Fortress [SEP] architect
Peter and Paul Fortress
The Peter and Paul Fortress is the original citadel of St. Petersburg, Russia, founded by Peter the Great in 1703 and built to Domenico Trezzini's designs from 1706 to 1740 as a star fortress. In the early 1920s, it was still used as a prison and execution ground by the Bolshevik government. 
Today it has been adapted as the central and most important part of the State Museum of Saint Petersburg History. The museum has gradually become virtually the sole owner of the fortress building, except
Leon Benois
Leon Benois (; 1856 in Peterhof – 1928 in Leningrad) was a Russian architect from the Benois family. 
Biography.
He was the son of architect Nicholas Benois, the brother of artists Alexandre Benois and Albert Benois. He built the Roman Catholic cathedral of Notre-Dame in St Petersburg, the mausoleum of the Grand Dukes of Russia in the Peter and Paul Fortress, the Russian Chapel in Darmstadt, and the Alexander Nevsky Cathedral, Warsaw, among many other works. Benois served as Dean of the