The Queen's Chapel is a chapel in central London, England. Designed by Inigo Jones, it was built between 1623 and 1625 as an adjunct to St. James's Palace, initially as a Catholic chapel for the Infanta Maria Anna of Spain, Holy Roman Empress, who in the end never used it because she didn't marry King Charles I of England. Afterwards, it was used by the woman he did marry, Queen Henrietta Maria of England, a Catholic, and her retinue. In later years, it served various continental Protestants who were resident at Court. It is one of the facilities of the British monarch's household religious establishment, the Chapel Royal, but should not be confused with the 1540 liturgical building also known as the Chapel Royal, which is within the palace, just across Marlborough Road. Queen's Chapel is a Grade I listed building.