When he first arrived in Moscow, everything appeared to be rather grey and dark, but as he came to the city centre, there was a dramatic change. There were so many fantastic buildings with very interesting architecture. He found Red Square and the Kremlin very impressive and was very surprised by the number of churches and cathedrals in and around Moscow. He got the impression that religion is still at the heart of the Russian culture. Although a large number of churches are not used for services, they are beautiful kept. The frescoes and icons are brilliant.
His first journey by Metro was unforgettable. Some of the stations are beautifuly decorated. At one of the stations he thought he was in a palace.
(дальше просто вместо "I" вставляешь "he")