The outside and inside of this church is beautiful. We went on Sunday and caught the end of Mass, hundreds of local people attended. The bells outside were rung by hand and it was amazing. The inside is full of magnificent paintings and murals.
I'm orthodox and visiting church often. So - this one is outstanding inside! I liked painting and interior, was embraced by chorus singing. If you'd like to feel special of russian religion - just visit one Sunday Service in Christ Resurrection Church.
Absolutely beautiful church but no literature or signage in English. A 15 minute event at most. Definitely with seeing as there is not much else to do in KM, but somewhat disappointing compared to the audio tours of many of the church's and cathedrals in Europe.