Not sure about those sites, never been there. But I can tell you that for some other historic church and related sites, make sure that either your tripod or monopod has rubber feet, or if dual purpose feet, make sure the rubber is down, not the metal spikes.
Regardless if it is a 300 year old wood floor, or a restored marble floor only 20 years old, I can tell you with certianty that using a tripod or monopod with a metal spike sure ain't gonna make you any friends. So just be safe and gentle. For the record, collectively from several clery of various faiths I know and several museum administraitor friends of mine, a collective "thank you" in advance for doing so.