The story of St Isaac's
French architect Auguste de Montferrand spent 40 years building the cathedral, from 1818 to 1858. Thousands of workers sank wooden piles into the marshy ground, and the dome was covered with about 100 kg of gold.
Inside are malachite and lapis lazuli columns, mosaics and a huge iconostasis. During the Second World War the dome was painted grey so it would not be a target. Today the colonnade around the dome is one of the best viewpoints in the city.



