Grand Choral Synagogue, the only Synagogue in St Petersburg.
From Wikipedia: “Today, the Jewish community in the city is the second largest in Russia, after Moscow. The majority of the Jews there remain secular, but there is also an Orthodox community. While the Jewish population was 107,000 in 1989, after the collapse of the Soviet Union and mass migration of many Jews from Russia to Israel and the United States, the population declined dramatically. As of 2010, the Jewish population was about 40,000.”