The Cathedral of Christ the Saviour, Moscow, Russia, on the northern bank of the Moskva River, a few blocks southwest of the Kremlin. With an overall height of 338 feet it is the tallest Orthodox Christian church in the world.
Cathedral on the Blood, Yekaterinburg, Russia. stands on the site of the Ipatiev House, where the Romanovs – the last Royal Family of Russia – were murdered. (In my view, the House should not have been raised.