Walking Caernarfon Castle: what it's actually like inside

Coming in through the King's Gate

You enter from Castle Square, straight into the King's Gate, and the scale registers immediately. The gate passage is deep, dim and deliberately awkward — a would-be attacker would have faced a sequence of portcullises, murder-holes overhead and a turn that forced them to expose their unshielded side. Look up as you pass through: the slots in the vault above you are not decorative. Above the outer arch sits the weathered statue niche, traditionally identified as Edward I.

It is worth pausing here rather than being carried through by the crowd. The gate was never finished to its intended design — the rear of the structure simply stops — and that half-built quality is the single most useful thing to understand about Caernarfon before you go any further.

The banded stonework

Once inside, step back and look at the walls properly. Caernarfon is not built from one stone. Horizontal bands of darker and lighter masonry run through the curtain walls, and the towers are polygonal rather than round — unusual for the period, and unlike Edward I's other North Wales castles at Conwy, Harlech or Beaumaris.

The long-standing interpretation is that this was deliberate imperial imagery, echoing the banded walls of Constantinople and asserting Roman lineage over a newly conquered Wales. Whether or not the symbolism was quite that pointed, the effect in person is unmistakable: the castle reads as a statement building, not just a fortress.

Walking the wall walk

The wall walk is the best thing here, and the part people most often run out of time for. A largely intact circuit runs along the northern and eastern walls, linking several towers, with the walled town falling away on one side and the water on the other. You get the town's grid laid out below you, the Menai Strait beyond, and on a clear day the hills of Anglesey.

It is not one continuous level path. You climb, drop into a tower chamber, cross, and climb again. Allow forty minutes to do it without rushing, and more if you stop to photograph — you will stop to photograph.

The Eagle Tower

The largest and grandest tower, at the western end above the water. It housed the most significant royal apartments in the castle and carries the remains of the carved eagles that give it its name, high on the turrets and easy to walk straight past.

The climb is the real one — a tight spiral of original stone with a rope handrail. At the top you get the widest views in Caernarfon: the Strait, the harbour, the marina and the whole footprint of the castle beneath you. If you only have the energy for one tower ascent, make it this one.

The Queen's Tower

The Queen's Tower now holds the Royal Welch Fusiliers Museum, covering over three centuries of one of the British Army's oldest infantry regiments. It is a proper museum rather than a display case in a corridor, and it is included in general admission — which surprises a lot of visitors who skip it.

It also functions as a useful shelter. If the weather turns, this and the King's Gate exhibition spaces are where you head.

The inner ward

Expect grass, not rooms. The two wards — Upper and Lower — are open lawns today, with low footings marking where the great hall and domestic ranges stood or were planned. Some of it was never built at all.

This throws people. If you arrive expecting furnished medieval interiors you will feel short-changed. Come understanding that Caernarfon's interest is its walls, its towers and its views, and the empty ward instead becomes the place you stand to take the whole thing in. Read our castle layout guide before you go and the space makes far more sense.

Stairs, footing and access

The stairs are original medieval work: steep, narrow, worn smooth in the middle and uneven at the edges. Spiral staircases are tight and mostly one-way in practice — you will end up waiting for someone coming the other way. Wear shoes with grip, and be aware that wet stone in Welsh weather is genuinely slippery.

There is a lift in the King's Gate serving part of the upper level, but the wall walk and tower tops are reached by stairs only and cannot be made step-free. Our accessibility guide sets out exactly which areas are reachable without stairs.

Best time of day to visit

For photographs, late afternoon is the clear winner. Low warm light rakes across the banded stonework and picks out the colour differences that flatten out completely under midday sun. The western face and the Eagle Tower catch it best, and the view back at the castle from the harbour side is at its strongest in the last hour or two before closing.

For quiet, go early. Weekday mornings shortly after opening are the calmest the castle gets — you can climb the Eagle Tower spiral without queueing, which makes a real difference. Coach parties and cruise passengers calling at Holyhead tend to arrive in mid to late morning and move through in a block, so late morning is usually the busiest stretch of the day.

School holidays, bank holidays and event weekends change the picture entirely; on those days arriving at opening is less a preference than a necessity. Check current hours on our opening times page before you set off, as last admission is earlier than closing.

What you can see without a ticket

Quite a lot, as it happens. The castle's exterior is its most photographed aspect, and none of it is behind the ticket barrier. From Castle Square you get the full King's Gate frontage — the statue niche, the banded masonry, the sheer height of the thing — free of charge.

Walk round toward the harbour and the Aber Swing Bridge and you get the classic wide view of the whole castle across the water, with the Eagle Tower on the left. This is the shot most people picture when they think of Caernarfon, and it is taken from outside.

The medieval town walls are a separate structure from the castle, and stretches of them can be followed at street level through the town for nothing. Access to the walls' own walkway is limited and has been restricted at times, so treat it as a bonus rather than a plan.

What you do not get without a ticket: the wall walk, any tower interior, the Eagle Tower views, the Royal Welch Fusiliers Museum and the wards. If you are passing through with an hour to spare, the exterior circuit is a genuinely worthwhile free walk. If you have half a day, pay the admission — see tickets and prices.