The Queen’s Chapel, officially known as The Queen’s Chapel St. James Palace, is a historic chapel in central London designed by Inigo Jones and built between 1623 and 1625 as an adjunct to St. James’s Palace. It was originally constructed as a Catholic chapel for the Spanish Infanta Maria Anna, but she never used it; instead, Queen Henrietta Maria, wife of King Charles I, a Catholic, used it.
Architecturally, it is notable as the first classical-style building in England, designed in a neo-classical Palladian style inspired by Italian architecture. The chapel was initially attached to St James’s Palace, but after a fire in 1809 destroyed the connecting wing, it became separated by Marlborough Road and now appears more part of the Marlborough House complex.
 
interesting facts....
The chapel has served so many religions.
The Queen’s Chapel was built between 1623 and 1625 as a Catholic chapel at a time when Catholic churches were generally prohibited in England. infact there were riots in the streets outside the Palace on its completion
From the late 17th century, it was known as the “German Chapel” because it was used by German Protestant courtiers of George I
Queen Elizabeth The Queen Mother’s body lay in the Queen’s Chapel in 2002 before her lying-in-state at Westminster Hall