They’ll want to raze them to the ground. Can’t have anyone even contemplating what they once stood for.
Many old and beautiful churches have already suffered the fate of being turned into mosques and bars (and worse). The new owners don't want them torn down because they delight in committing sacrilege and blasphemy in what was once a holy house of God.
No, don’t tear it down—turn it into a gay bar and strip club. Muslims would NEVER let this happen to a Mosque. They will die for Allah! Russian wouldn’t permit this to happen to an Orthodox Church as well. That’s why we will lose in the end, and the end is coming.