I have studied Russia since the start of my academic career. It still amazes me as to how many people do not know the beauty that Russia has to offer, especially architecturally. There is St. Basil's, which is probably the most famous architectural monument in Russia, but one thing that really makes me squeal in delight is the Moscow Metro. Designed during the reign of Stalin, the metro stations were supposed to be a highlight of the sophistication and opulence enjoyed by the Russian people (although this may not have been the case factually, these metro stations still truly scream luxury).
The Komsomol'skaya Station
Designed by Shchusev
The Novoslobodskaya Station
Other Stations along the metro: