St. Isaac's Cathedral
St. Isaac's Cathedral is the 4th largest cathedral in the world. Gold dome (100 kg gold), 112 granite columns. Built over 40 years (1818-1858) by architect Montferrand. Colonnade offers best St. Petersburg panorama, 262 steps. Cathedral 450 RUB, colonnade 300 RUB. Closed Wednesday. Metro Admiralteyskaya.
