Yes, I honestly took a tour of the Moscow Metro. The stations–all 200 of them–are each unique. Some of the older ones have marble and semi-precious stones. I toured only 7 of them, but are pretty impressed. My guide, Elena, also pointed out many of the places were are with Stalin’s image had been removed, a process called “de-Stalinization.”
The first stations were built in the 1930’s but those built just after WWII are the most elaborate. Oh, and there’s free wifi. Seriously, this is the cleanest metro I’ve ever seen–that includes Tokyo.