International Economic Forum attendees will have plenty of distractions in `` Leningrad '' International Economic Forum Cathedral is made of Several thousand kilos of gold . St. Isaac 's was built on spot where Czar Peter was fatally wounded in 1881 .
International Economic Forum attendees will have plenty of distractions in `` Paris of the East '' Massive dome of St. Isaac 's Cathedral is made of 100 kilos of gold . Church on Spilled Blood was built on spot where Czar Alexander II was fatally wounded in 1881 .