The Order of the Thistle is a prestigious chivalric order in Scotland, established in the 15th century. It is one of the oldest orders of knighthood in the United Kingdom and is dedicated to honoring those who have made significant contributions to Scotland. The order's emblem features a thistle, which is Scotland's national flower. Membership in the Order of the Thistle is limited, typically comprising the monarch and a select group of knights. The order's ceremonies and traditions are steeped in Scottish history, with the annual service held at St. Giles' Cathedral in Edinburgh.