I assume that's a Western Christian church, as befits a Pendragon --- not that there were a bunch of stone buildings in King Arthur's time in Britain --- but the spires look like the finials [ or htis possibly ] on Burmese stupas.
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Destroying a stupa, on the other hand, is considered an extremely negative deed, similar to killing. Such an action is said to create massive negative karmic imprints, leading to serious future problems. It is said this action leaves the mind in a state of paranoia after death has occurred, leading to totally unfortunate rebirths