Non-Church Sanctuary
It is not only at churches that Wayfarers can claim Sanctuary. Any holy place, whether an ancient tree or holy well, a stone circle or ruined chapel, might offer a night of basic Sanctuary.
With all holy sites, whether church or prehistoric, be incredibly careful not to cause any damage. This is why I recommend a bivy & tarp over a tent, as a bivy allows low-profile dry sleep without needing pegs in the ground. If a place is of archaeological significance, it’s best not to poke the ground with 6” metal spikes.
Also, feel your way carefully when choosing your actual sleep-spot. The wrong choice can be a harrowing experience! For example, don’t sleep in the end chamber of a long barrow. This is (imo) the initiation space, and will not offer restful slumber. Take a side-chamber instead, where you’ll wake well rested.
Practice the same precautions for non-churches as for churches. Circumambulate. Offer a gift - song or silence - and feel your way carefully. Rise early, keep neat, and leave the place better than you found it.
Rest well, Wayfarers!