The Tower of London carries two meanings that the novel repeatedly brings into collision: it is a royal lodging and a place where royal claimants can be confined or disappear. Its political force lies in that duality. Princes may enter under the appearance of honor or security, while their presence becomes a question of succession; the same fortress can later frame a queen’s public ascent and stand ready as a defensive refuge for the realm.

Royal Lodging and Political Prison

The Tower’s character as both residence and prison is made explicit in Catalina of Aragon’s account of Edward Plantagenet, Duke of Warwick. Warwick, a royal prince with a stronger claim to the English throne than Henry VII of England, was confined there before his execution. Catalina understands his death as the price paid to secure her marriage and remove a rival claimant. Her father had told Henry VII that he would not send her to England while Warwick lived; by the time Catalina’s ship was ordered, Warwick was dead. The Tower thus enters her story before her arrival as a place whose political consequences have already been attached to her future.

Catalina’s account also emphasizes how confinement could be misread by the person held there. Warwick believed that the Tower was an honorable royal lodging, not a prison. When another claimant was housed nearby and suggested escape, Warwick took the proposal as companionship and spoke of it within earshot of his guards. The episode gave his captors grounds to accuse him of treason. Catalina presents the sequence as a trap made possible by Warwick’s innocence and by the Tower’s double identity: a royal residence could disguise imprisonment, while an apparent opportunity to leave could be turned into evidence against a prisoner. His execution followed with little public protest, as the country preferred the security of an undisputed king.

The Tower’s earlier history reinforces that danger. Arthur, Prince of Wales, recounts that Edward IV died young, leaving sons to inherit, and that Richard III first held the throne in trust before claiming it for himself. Richard III sent his nephews, the young princes, to the Tower; they never emerged, and no one knows what happened to them. The account makes the building a site where dynastic conflict becomes unresolved absence. Its force comes not only from confirmed executions, but also from the unanswered fate of those who vanished behind its gates.

Confinement and the Cost of Survival

The Tower also shapes Margaret Pole’s explanation of the choices available to a royal woman. When Catalina asks why she did not refuse her marriage, Margaret answers that her brother was imprisoned simply for being born a prince. Had she refused, she believed she would have joined him. She had the opportunity to change her name as a girl, and did so. The Tower is therefore not just the destination of a political rival: its threat reaches beyond its walls, influencing a woman’s decisions about marriage and identity before she is herself imprisoned.

For Catalina, the Tower gives physical form to a fear that royal birth cannot guarantee safety. When she insists that she remains an Infanta of Spain even if she never becomes Queen of England, the Spanish ambassador warns that English princes of royal blood have entered the Tower and never seen daylight again. He argues that her opponents could call her a pretender. This is a warning, not an account of Catalina’s confinement, but it overturns her confidence that rank alone will protect her. The place serves as a political threat precisely because its history makes the warning credible. Catalina’s royal status distinguishes her, yet the Tower reminds her that English politics can recast a royal person as a danger to the throne.

From the Tower to the Crown

The building’s meaning changes sharply on 24 June 1509, when Catalina is carried from the Tower to Westminster as an English princess. Her litter, made of cloth of gold and borne by four white palfreys, makes the journey a public spectacle. In the coronation that follows, Henry is crowned first; Catalina then receives the holy oil, takes the sceptre and ivory wand, and becomes Queen Katherine of England. The Tower is not described here as a prison holding her, but as the point from which she enters the ceremonial route to queenship. Its previous associations with threatened succession sharpen the contrast: a place linked to the confinement of princes now lies behind a queen acclaimed by the crowd.

That transformation does not erase the earlier meaning. Catalina has spent years awaiting the recognition her coronation finally gives her, and the passage from Tower to Westminster turns that long delay into visible political arrival. The route also marks her changed standing: she travels not as an uncertain foreign bride whose position can be challenged, but as an English princess proceeding to an anointing that she understands as a divinely appointed office. The same institution associated with the vulnerability of royal blood becomes part of the setting for its public affirmation.

Arsenal and Last Refuge

The Tower has practical as well as dynastic importance. When Katherine prepares to defend England against Scotland, she orders Thomas Howard to take cannon from the Tower’s armories and carry them north with the fleet toward Newcastle. The fortress is therefore an arsenal from which the crown can supply a military response. Its role extends beyond confinement and ceremony: weapons stored within it become part of the queen’s effort to protect the borders.

The Tower also appears in the defensive plans for London. Katherine and Thomas Howard, Earl of Surrey, prepare for the possibility that the Scottish advance might break through successive English positions. If the defense of the capital failed, they would summon a citizens’ army, raise earthworks around the City, and retreat to the Tower. It could be held long enough for Henry VIII to return from France with reinforcements. In this plan the building is neither a royal home nor the instrument of a claimant’s removal, but a stronghold intended to preserve the government and its capacity to resist.

Across these episodes, the Tower’s significance comes from its changing relation to power. It can shelter a prince while concealing his imprisonment, contain people whose birth makes them politically dangerous, prompt choices by those who fear confinement, provide arms to a queen’s forces, and offer a final refuge for London. Catalina’s coronation procession draws these meanings together without resolving them: the institution behind her is at once a reminder of the cost of succession and a landmark on the path to sovereign authority.