The city of Leningrad. Sights of the city associated with the names of the Decembrists: Decembrists' Square (formerly Senate Square), a monument to Peter I, Palace Square, the Senate building, St. Isaac's Cathedral, Winter Palace, Ioanovsky Bridge, Peter and Paul Fortress. Concrete stele to the Decembrist N.F. Lisovsky at the old cemetery in the village of Karaul, Ust-Yenisei district, Krasnoyarsk Territory.