When the Reformation came in 1550, St John’s Chapel was despoiled of all its artistic treasures by order of the Government. Its frescoes were coated over with whitewash, its stained glass windows were destroyed, and all its ecclesiastical ornaments were removed; in later times the Chapel became a repository for the Tower records. It was during Lord de Ros’s Governorship in 1857 that the accumulated lumber of centuries was, as has already been said, in consequence of Prince Albert’s wish, cleared away from the Chapel. It had actually been proposed to turn this beautiful building into a military tailor’s warehouse. Such was the honour bestowed on this sacred and beautiful English building comparatively only a few years ago. But in recent years it must be admitted that we have shown a more enlightened regard towards the relics connected with the history of our country, none of which is of greater interest, or more worthy of regard and veneration, than the old Norman Chapel of St John’s in the Tower.
Royal scenes of pomp and mourning this ancient building has beheld within its mighty walls. All our Norman and Plantagenet kings here worshipped a God whose laws they seldom obeyed. Here lay in state the corpse of the White Rose of York, Elizabeth, the Queen of Henry VII.; and here, those upon whom the honour of knighthood was to be conferred, passed their solemn all-night vigil, watching their armour.
The summit of the White Tower covers a space of 100 feet on the eastern side, by 113 on the north and south. The four turrets, the most conspicuous points in any view of the Tower, rise 16 feet above this leaden field, and each is crowned with pepper-box-shaped roofs made of lead. The turret crowning the south-eastern angle contains a chamber traditionally known as the prison of Joan of Kent. In the early years of the eighteenth century it was used as an observatory by Flambard, the Astronomer-Royal, and a contemporary of Isaac Newton, some years before the great Observatory was built at Greenwich.
Although cannon were mounted on the roof in Tudor days, the platform could not have supported very heavy artillery, as it was only built of shingle. As I have said elsewhere, no record has come down to us of the time when the turrets with their little pepper-castor tops were first placed there, but the Harleian MSS. prove that similar ones existed as far back as the reign of Henry V.