Queen's celebrated its sesquicentennial anniversary in 1991, and was visited by Charles , Prince of Wales , and his then-wife , Diana , to mark the occasion .
Queen ຂອງສະເຫຼີມສະຫຼອງວັນຄົບຮອບ Sesquicentennial ຂອງຕົນໃນ 1991, ແລະໄດ້ໄປຢ້ຽມຢາມ by Charles, ນາຂອງ Wales, ແລະຫຼັງຈາກນັ້ນພັນລະຍາຂອງພຣະອົງ, Diana, ກັບເຄື່ອງຫມາຍໂອກາດໄດ້.