How Chepstow Castle’s gatehouse protected its entrance

A castle entrance had to let people and supplies in without giving attackers an easy way through. At Chepstow Castle in Wales, the main gatehouse shows how several features could work together to control that passage.

The gatehouse is more than an impressive pair of towers. Look at the approach, the doors, the slots in the passage and the openings above it to understand the entrance as a defensive system.

Start outside the gate

Chepstow’s main entrance is flanked by two round towers. Cadw’s teachers’ notes on the castle identify remains of a barbican: an additional work outside the main gatehouse. It helped protect the approach before anyone reached the gate passage itself.

That outer work and the gatehouse served different parts of the same problem. Controlling the route to a door gave defenders more options than relying on the door alone.

Doors and portcullises were separate barriers

Cadw identifies thick iron-clad doors and slots for two portcullises at the main gatehouse. A portcullis was a heavy grille that moved vertically in grooves; it was not the same thing as a hinged door. The slots are evidence for the barriers even where the grilles themselves do not survive.

The original main gatehouse doors also survive. Cadw’s notes date them to no later than the 1190s and describe them in its exhibition. That date belongs to the doors; it should not be treated as the construction date for every part of the castle. See Cadw’s gatehouse notes and door caption.

Look above and to the sides

The same notes identify two openings known as murder holes at the beginning of the gate passage, a projecting parapet and narrow arrowloops. These features gave defenders ways to cover different parts of the entrance rather than watching from one position.

The name “murder hole” can make the passage sound like a storybook trap. The useful observation is simpler: openings above a passage allowed defenders to act from a protected position. Avoid assuming a particular attack or material was used there without evidence for that event.

Read the entrance in context

Chepstow changed over centuries. Cadw identifies the larger gatehouse windows as Tudor, so not every opening visible today should be read as an original medieval firing position. Its site history and visitor information gives the wider setting and current practical details.

On a plan or a visit, trace the approach first, then identify each barrier and the positions that overlook it. Check what survives, what has been replaced and what a source identifies as a later alteration. That gives a clearer picture than treating every gatehouse as the same fixed design.