The Tower That Watched an Empire

In the last months of 1066, as William the Conqueror tightened his grip on a newly subdued England, he ordered a fortress raised on the north bank of the Thames. By 1078 the White Tower — the great keep that gives the whole complex its name — rose from stone brought in from France, under the direction of the Bishop of Rochester, a structure so imposing that Londoners of the time saw it not as protection but as oppression, a Norman fist planted at the edge of their city.

The White Tower itself is a marvel of eleventh-century engineering: roughly 36 by 32 metres at its base, standing 27 metres high at its southern battlements, originally three storeys with a basement, an entrance level reached by a removable wooden staircase, and an upper floor. Historians have called it 'the most complete eleventh-century palace in Europe,' a keep meant to shelter a king or his representative in both comfort and unassailable strength.

Over the following two centuries, the Tower grew far beyond that single keep. Richard I, in the late twelfth century, and later Henry III and Edward I expanded it into the layered complex still visible today — an innermost ward around the White Tower, an inner ward built under Richard I, and an outer ward completed by Edward I in 1285. By then the general layout of concentric walls and moat had settled into the form it holds to this day, enclosing nearly 12 acres, with a further 6 acres of surrounding land known as the Tower Liberties.

The Tower was never merely defensive. It served, at different times, as a royal palace, an armoury, a treasury, a menagerie, the home of the Royal Mint, a public record office, and — most famously — the repository of the Crown Jewels. From the early fourteenth century until the reign of Charles II in the seventeenth, monarchs would traditionally spend several nights within its walls before processing from the Tower to Westminster Abbey for their coronation.

But the Tower's darker reputation rests on its long service as a prison, a role it held from around 1100 until 1952. Its most notorious mystery involves the Princes in the Tower, two boys housed there in the late fifteenth century who mysteriously vanished, presumed murdered. Decades later, Elizabeth I was held within its walls before she became queen, alongside figures like Sir Walter Raleigh and Elizabeth Throckmorton — imprisonments so common that the phrase 'sent to the Tower' entered the language itself.