Cathedral of Christ the Saviour is the largest in Russia. It was built in the 19th century to commemorate the victory over Napoleon, then demolished in the 1930s and rebuilt again in the 1990s. Its main cross is 9 metres tall and I don't even know how much gold was used to cover its domes.
On the left you can see the high-rise building of our Ministry of Foreign Affairs. It's one of 7 such buildings constructed in Moscow at the time of Stalin