Caernarfon Castle Guide: History, Highlights & How to Visit
- Jenn & Leon
- May 24, 2025
- 7 min read
Updated: Jan 2
Caernarfon Castle in Wales is one of the most visually arresting and historically significant castles in Europe.
Set against the backdrop of North Wales's stunning coastal landscape, it’s more than just a fortress; it’s a storybook scene, a photo op heaven, and a UNESCO World Heritage Site steeped in symbolism and imperial ambition.
Whether you enter the grounds or simply admire it from the outside, like we did, this castle leaves a lasting impression.
In this post, we’ll take you through the must-see highlights of Caernarfon Castle, from its unique riverside setting to its imperial architecture.
You’ll learn about the castle’s fascinating royal and military history, how to get there, ticket prices, and the best time to visit.
We also share top travel tips, our personal experience, including a surprise encounter with a knight in armor, ten interesting facts, and our honest rating.
Our Highlights of Caernarfon Castle
● Commanding riverside setting
● UNESCO World Heritage Status
● Unusual architectural features
● Charming town surroundings
● Live heritage experiences
Set along the scenic River Seiont and overlooking the Menai Strait, Caernarfon Castle offers one of the most majestic waterfront views in all of Europe.
Its massive polygonal towers and striped masonry echo the walls of Constantinople, intentionally built to project power.
The castle’s position at the edge of a vibrant, colorful town means it’s not only a historic place but also a picture-perfect stop for any top destination road trip.
The surrounding town of Caernarfon is a gem in itself—think cobbled streets, old stone pubs, and sailboats gently swaying in the harbor.
For us, the surprise highlight was a fully armored medieval soldier strolling past the entrance, posing for photos and adding an unforgettable moment to our day.
💡 If you’re heading to Anglesey or Snowdonia, Caernarfon makes for a strategic and scenic stop. For more castle routes, check out Discover Wales.
A Brief History of Caernarfon Castle
Commissioned in 1283 by Edward I as part of his campaign to conquer Wales, Caernarfon Castle was not just a military base; it was a symbol of dominance and control.
Its polygonal towers and eagle-topped battlements weren’t just architectural flourishes; they were deliberate emblems of imperial power, meant to echo the grandeur of ancient Rome and Byzantium.
Unlike many medieval castles, Caernarfon was never just a defensive fortress. It was a royal palace, a government hub, and a royal baby’s birthplace.
It’s the traditional site for the investiture of the Prince of Wales, most famously used in 1969 for Prince Charles.
Though never fully completed, the castle’s scale and design remain unmatched in Britain.
Today, it stands as a proud part of Edward I’s “Iron Ring,” a network of fortresses that includes Beaumaris, Conwy, and Harlech, all now UNESCO-listed.**.
💡 If you’re passionate about ancient wonders or castles, this one should be high on your list.
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How to Get to Caernarfon Castle
Caernarfon Castle is located in Gwynedd, North Wales, overlooking the Menai Strait, and is well connected by road and public transport.
By Car
Car Rental
By Bus
By Train
⪢ Consider Taking a Tour
One of the most popular ways to visit Caernarfon is by tour. Book day trips taking you to several castles, tour Wales' coast, or check out the likes of Snowdonia and the Italian town of Portmeirion with Get Your Guide.
⪢ Contact Information for Caernarfon Castle
● Address: Castle Ditch, Caernarfon LL55 2AY
● Phone: (+44) 0300 025 2239
● Email:
● Website:
● Instagram:
● Facebook:
Easily Find Hotels in Gwynedd and Beyond
Looking for a place to stay nearby? Browse Gwynedd hotel deals below to find great rates for an overnight stay.
Our map offers a user-friendly interface that allows you to zoom in and out, providing a comprehensive view of the area and enabling you to identify the most convenient hotel options based on your current location or desired destination.
Tickets, Opening Hours & Best Time to Visit
⪢ Ticket Prices
Caernarfon Castle is managed by Cadw, the Welsh Government’s heritage service. Entry includes full access to the castle walls, towers, museum exhibits, and the Royal Welch Fusiliers Museum.
● Adults: £11.40
● Seniors (65+) & Students: £8.10
● Children (5–17): £8.10
● Family (2 adults + up to 3 children): £37.20
● Under 5s: Free
● Cadw Members: Free
Tickets can be purchased at the gate or online at cadwmembership.service.gov.
Prices are correct at the time of writing (May 2025). Please check the official website for the most up-to-date information.
All prices are in British pounds. Convert your currency here.
⪢ Opening Times
● March – October: Daily, 9:30 am–5 pm
● November–February: Daily, 10 am – 4 pm
● Closed: 24–26 December and 1 January
⪢ Best Time to Visit
● Spring and autumn offer fewer crowds, mild weather, and dramatic light for photos
● Summer brings more visitors and events, but early morning or late afternoon visits are still enjoyable
● Arrive close to opening for quiet moments on the walls and uncrowded tower climbs
● Weekdays are generally quieter than weekends
💡 Planning to tour more castles?
Combine Caernarfon with nearby Beaumaris or Conwy and use a guided tour for historical context.
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Tips for Visiting Caernarfon Castle
● Even if you don’t go inside, walk the perimeter—it’s free and stunning. If you do head inside, don’t skip the Eagle Tower—it’s the tallest and most iconic, with sweeping views over the Menai Strait and Snowdonia mountains.
● Snap pics from across the water for postcard-perfect shots.
● Watch for reenactments or costumed guards during events—it adds a magical touch
● Don't miss the Royal Welch Fusiliers Museum: Included in your ticket, this museum inside the castle honors Wales' oldest infantry regiment with uniforms, medals, and moving stories.
● Bring a light jacket—even in summer. The castle is wind-exposed, especially on the upper levels. The weather can change quickly near the coast.
Download the Cadw app: There’s no formal guided tour, but the Cadw app includes maps and information that enhance your self-guided experience.
● Spend time in the charming town—cafés, independent shops, and a harbor view await.
● Heading to Anglesey? This castle is an ideal stopover between key sites.
● Find the best places to stay on our Wales Hotel Map.
Our YouTube Highlights
We didn’t film inside, but we caught the incredible moment a soldier in traditional metal armor strolled down the street and posed for a photo with Jenn—a surprise that brought history to life!
If you enjoy our video and want to follow more of our adventures, please like and subscribe!
Your support truly is invaluable to us, and we will always strive to produce the best content we can from around the world!
10 Interesting Facts About Caernarfon Castle
1. Built in 1283 as part of Edward I’s conquest of Wales
Commissioned to assert English dominance, it marked a turning point in Wales’ medieval history as part of the infamous “Iron Ring” of castles.
2. Inspired by the Walls of Constantinople and Roman fortifications
Its design wasn’t just defensive—it was symbolic. The castle’s angular towers and banded masonry were meant to echo the grandeur of imperial Rome and Byzantium.
3. Home to the 1969 investiture of Prince Charles as Prince of Wales
In a modern echo of medieval tradition, Caernarfon hosted this royal ceremony, broadcast to millions and embedding the castle in living memory.
4. Its Eagle Tower is the tallest and most iconic structure
With three turrets and sweeping views, the Eagle Tower housed royal apartments and remains the castle’s most imposing architectural statement.
5. Originally painted with vibrant colors for added grandeur
Believe it or not, medieval Caernarfon wasn’t grey—it was vividly painted to dazzle, symbolizing royal authority and wealth.
6. Surrounded by still-intact town walls
Few places in Britain retain their medieval defenses as fully as Caernarfon, offering a rare chance to walk along ancient fortifications that once guarded the town.
7. Never completed, yet one of Britain’s most formidable castles
Despite its grandeur, parts of the castle remain unfinished, adding to its mystique and showcasing the scale of Edward I’s ambition.
8. Includes symbolic eagle carvings referencing Roman power
These aren’t just decorative. The eagles were meant to align Edward with Roman imperial might, reinforcing his claim to rule over Wales.
9. A hub for English administration in medieval Wales
More than a fortress, Caernarfon served as a seat of English governance in the region, blending military strength with bureaucratic control.
10. Filming location for documentaries and historical reenactments
Its cinematic setting and rich history have made it a go-to backdrop for period films, educational series, and royal retrospectives.
Our Experience Rating:
Caernarfon Castle
Despite not going inside, Caernarfon Castle blew us away with its scale, beauty, and sheer presence.
The riverside setting, incredible views, and rich sense of place were unforgettable.
Had we entered, it might have scored even higher, but this is one of those places where even the outside is magical.
Highly recommended for any fan of castles, history, or must-see places in Wales.
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Fabulous castle, so imposing and strong. Has stood the test of time and no doubt will continue to! A must-see in Wales 👌