A royal peculiar is a Church of England parish or church exempt from the jurisdiction of the diocese and the province in which it lies, and subject to the direct jurisdiction of the monarch.
St George's Chapel, formally titled The King's Free Chapel of the College of St George, Windsor Castle, at Windsor Castle in England is a castle chapel built in the late-medieval Perpendicular Gothic
Royal peculiar
…The Church of St Edward, King and Martyr St George's Chapel, Windsor Castle, the Chapel of the Order of the Garter Royal Chapel of All Saints (in the grounds of the Royal Lodge in Windsor Great Park…
St George's Chapel is located on the north side of the Lower Ward of Windsor Castle
St George's Chapel (left) at Windsor Castle in 1848, showing the absence of the Queen's Beasts on the pinnacles (since replaced). Watercolour by Joseph Nash
St George's Chapel in the Lower Ward at centre right, partially behind tree