Buildings & layout
A concentric fortress built up over nine centuries — how the towers, walls, gates and green fit together, and how to find your way around.
The Tower of London is not one building but a walled complex, layered up by successive kings around a single Norman keep. Once you understand its concentric design — a strong centre, ringed by walls, ringed again — the site stops feeling like a maze and starts to read as a fortress. Here is what the main structures are and how they fit together.
At the heart stands the White Tower, the great Norman keep begun around 1078. Rising about ninety feet, with walls up to fifteen feet thick, it is one of the most complete eleventh-century keeps in the world. Inside are the Royal Armouries, the Line of Kings and the beautifully plain Chapel of St John, one of the oldest churches in London.
Around the keep runs the inner curtain wall, studded with towers that each held a role. The Bloody Tower is linked to the disappearance of the Princes in the Tower; the Wakefield and Beauchamp Towers held prisoners, many of whom left carved inscriptions still visible today; the Bell Tower once held Sir Thomas More. The inner ward also contains the Medieval Palace, the restored royal lodgings of Henry III and Edward I, and the Waterloo Block, home of the Jewel House.
A second, outer curtain wall wraps the whole fortress, and it is pierced on the river side by Traitors' Gate, the watergate through which prisoners were once brought in by boat. The narrow outer ward between the two walls is where the Wall Walk runs, giving raised views over the battlements toward Tower Bridge and the Thames.
Tower Green, the open lawn inside the walls, holds the private scaffold site where the queens were executed, now marked by a glass memorial, and the Chapel Royal of St Peter ad Vincula where many are buried. Beyond the outer wall lies the broad dry moat, drained in the 1840s and now a grassed expanse that has hosted everything from poppies to wildflower meadows. The Crown Jewels sit in the modern Jewel House, with a moving walkway to keep visitors flowing past the regalia.
Tucked along the inner wall is the Medieval Palace, the restored royal lodgings first built for Henry III and extended by his son Edward I in the thirteenth century. Its recreated chambers — with painted decoration, tiled floors and a canopied throne — are a reminder that the Tower was never only a fortress and a prison, but also a working royal residence, where medieval kings held court, received guests, and in times of danger took refuge behind the strongest walls in the kingdom.
For a visit, the logic is simple: enter near the river, go straight to the Jewel House for the Crown Jewels before the queue builds, then work through the White Tower and out onto the Wall Walk, saving Tower Green and the smaller towers for last. Allow two to three hours to do it without rushing. For opening hours and the current entrance arrangements during 2026 conservation work, see the visitor guide, and for the story behind the stones, the history of the Tower.
See the layout come to life with a guide who knows every tower and gate.
See Guided Tours