I was most fortunate years ago when my dad was posted to Tashkent, Uzbekistan and had the opportunity to vist the former soviet union. The culture and architecture still fascinates me. One particular architecture that captivated me was it's subway stations. I haven't seen many , but i do think this is just absolutely beautiful. have a look at metroart , tribute to the wonderful architecture of subways around the world.
The subways were also meant as bomb shelters.... Place was so sacred that there are guards in every station, and our camera was confiscated for no cameras were allowed. I wonder why? Fear of plagiarism?