St. Isaac's Cathedral – a unique example of russia architecture and art of the middle of the 19th century. The 4th largest dome construction in the world built during 40 years by 10 thousand workers. It used to be the main cathedral in Russia for all russian tsars were baptized there.
The Church of the Resurrection - called the Savior on the spilled-blood, was constructed as a memorial to Alexander II. The church is designed in old russian style with golden domes enamel ornamentation’s. The area covered with the interior multicolored mosaics is 7000 sq.m.
Kazan Cathedral - built between 1801 and 1811 to Voronikhin’s design to house the miracle working icon of our lady of Kazan. Kazan Cathedral was constructed in the shape of a latin cross.