This cover from Montenegro depicts 3 different stamps with historic buildings, including the stamp on the right top corner celebrating the Kazan Cathedral in St. Petersburg, Russia. Kazan Cathedral, also known as the Cathedral of Our Lady of Kazan, is a cathedral of the Russian Orthodox Church on the Nevsky Prospekt in Saint Petersburg. It is dedicated to Our Lady of Kazan, one of the most venerated icons in Russia. Construction of the cathedral started in 1801 and continued for ten years under the supervision of Alexander Sergeyevich Stroganov. This building is part of the UNESCO site "Historic Centre of Saint Petersburg and Related Groups of Monuments" , the name used by UNESCO when it collectively designated the historic core of the Russian city of St. Petersburg, as well as buildings and ensembles located in the immediate vicinity as a World Heritage Site in 1991. The site was recognised for its architectural heritage, fusing Baroque, Neoclassical, and traditional Russian-Byzantine influences.
