St. Isaac's Cathedral

Quick Facts City  Saint Petersburg Country  Russia Year  1818 - 1858 Height  101,5m / 333ft Surface  372m2 / 4,000sq ft Realisation Architect  Auguste Ricard de Montferrand Building Info Name  St. Isaac's Cathedral Category  Cathedral Address  St. Isaac's Square 1 Notes The world's fourth largest church dome after the St. Peter's in Rome, St. Paul's in London and Santa Maria del Fiore in Florence.