Nudism in Russia!
I've been to three beaches:
1. in Moscow (Stroginskaya floodplain)
2. in the Crimea (Pic. Koktebel)
3. in Rostov-on-Don, behind the water park on the M4 Don highway
In Moscow, I discovered nudism for myself in general - a wonderful place far from the curious + an atmosphere of silence and nature!
In Crimea, a nudist beach is located almost in the middle of the local textile beach. Everything is fine - but it is very crowded, there is no privacy, nature is super, it is located among the mountains practically, the views are beautiful.
In Rostov-on-Don, fragments of information found on the internet led me to this beach, organized by enthusiasts independently and at their own expense.
The place is good, but judging by the fact that the erected temporary buildings are demolished by some alcoholics in the absence of visitors to the beach - not very pleasant.
Sorry for interrupting, but by international country law the Crimea isn't part of Russia, but of Ukraine. Russia did occupy and annex the peninsula in 2014 by armed forces breaking international law. See UN resolution 68/262.