Interesting tangent:
Queen Elizabeth II never visited Israel, no doubt due to the UK Foreign Office, not due to her slighting Israel.
The paternal grandmother (born in Windsor Castle and died in Buckingham Palace) of King Charles III is permanently interred in Jerusalem’s Church of Mary Magdalene on the Mount of Olives. This area is claimed as part of a proposed capital for a ‘Palestinian’ state.
Will King Charles III dare to visit a Christian shrine in Palestine? Will the UK Foreign Office allow him? Will the Palestinian Authority allow him?
Prince Phillip visited it in the 1990s I believe. He was only the consort though, might be a bit more difficult for an actual monarchy to do a private visit with no political ramifcations.