Best castles around Beaumaris are found in a region known for its historical significance and diverse landscapes. The area features medieval military architecture, including a UNESCO World Heritage Site. Visitors can explore fortifications set against the backdrop of the Menai Strait and the peaks of Snowdonia. This blend of historical sites and natural scenery offers varied exploration opportunities.
Last updated: May 6, 2026
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Penrhyn Castle’s dominant stone façade belies more than its internal red-brick construction. Built in the early 19th century, its formidable architecture, opulent interiors and art collection draw on a long history of sugar and slate fortunes, social unrest and the longest-running labour dispute in British history. Owned by the Pennant family, Penrhyn is a prime example of how wealth derived from slavery has shaped Welsh buildings and local labour history. Richard Pennant, a staunch anti-abolitionist, used his fortune – acquired from slave-owning sugar plantations in Jamaica – to fund roads, railways, schools, hotels, workers’ cottages, churches and farms in North Wales. The Penrhyn Slate Quarry and Port Penrhyn, founded by the Pennants, dominated the Welsh slate industry for almost 150 years. Penrhyn Castle’s vast rooms, rich neo-Norman architecture and opulent furnishings are steeped in this colonial history. Penrhyn Castle is situated on the Menai Strait, with the peaks of the Eryri (Snowdonia) in the background, overlooking the quarry and harbour from which the slate was exported all over the world. It is surrounded by wooded and open parkland, ideal for exploring, and a walled garden that predates the castle and provides a peaceful haven for relaxation. (National Trust)
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While the National Slate Museum in Llanberis undergoes redevelopment, some of the museum’s activities will continue elsewhere. For example, the unique art of slate splitting and working will be demonstrated here at Penrhyn Castle for many years to come.
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Beaumaris Castle (/bjuːˈmærɪs/ bew-MAR-is; Welsh: Castell Biwmares Welsh pronunciation: [kastɛɬ bɪuˈmaːrɛs]), in Beaumaris, Anglesey, was built as part of Edward I's campaign to conquer north Wales after 1282. Plans were probably first made to construct the castle in 1284, but this was delayed due to lack of funds and work only began in 1295 following the Madog ap Llywelyn uprising. A substantial workforce was employed in the initial years under the direction of James of St George. Edward's invasion of Scotland soon diverted funding from the project, however, and work stopped, only recommencing after an invasion scare in 1306. When work finally ceased around 1330 a total of £15,000 had been spent, a huge sum for the period, but the castle remained incomplete.
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One of Edward I’s great Welsh fortresses, a notable landmark as you enter the town.
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Cool castle with an exciting history. It's worth a visit and there are many corridors in the castle to explore.
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Beaumaris is a great place to visit, lovely to walk round the town, easy to park and the castle is just something else!! Worth a visit and worth the entry fee for sure.
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Unfortunately other than being an old fort, I was unable to find any other information on this very old looking abandoned building. Please let me know if you have any further information.
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A beautiful castle to visit. Best to go early to avoid the crowds.
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Beaumaris Castle is a UNESCO World Heritage Site, celebrated as one of the finest examples of late 13th and early 14th-century military architecture in Europe. It features an almost perfectly symmetrical concentric design with 'walls within walls' and was the last and largest castle built by Edward I in Wales, though it remains an unfinished masterpiece.
Yes, Beaumaris Castle is family-friendly, offering opportunities to explore its battlements and towers. Penrhyn Castle also welcomes families with its extensive gardens and railway museum. Additionally, the Slate splitting demonstration at Penrhyn Castle provides an engaging historical activity.
Visiting in late spring offers the chance to experience sites like Castell Aberlleiniog with wild garlic carpeting the woodland floor and abundant birdsong. Autumn provides a beautiful array of leaf colours, enhancing the atmospheric ruins. Generally, spring and autumn offer pleasant weather for exploring.
Yes, there are several walking opportunities. For easy walks, you can explore routes like the "Beaumaris Castle – Beaumaris Pier loop" or the "View of Menai Strait – Red Boat Ice Cream Café loop from Beaumaris." You can find more options on the Easy hikes around Beaumaris guide.
Castell Aberlleiniog is an atmospheric motte and bailey fortress nestled within a serene woodland nature reserve. It offers a quiet area to explore history away from larger crowds, providing a sense of discovery.
Beyond exploring the castles, you can enjoy various outdoor activities. There are numerous Road Cycling Routes around Beaumaris, including longer loops like the "North Wales Coast Path – Conwy Castle loop." For runners, the Running Trails around Beaumaris offer routes like the "View of Menai Strait – Beaumaris Castle loop."
Yes, Penrhyn Castle is owned by the National Trust. It features beautiful gardens, a railway museum, and one of Wales' finest art collections, all set against the backdrop of Snowdonia.
Beaumaris Castle is renowned for its concentric design, featuring 'walls within walls' for multiple layers of defense. It also uniquely had a tidal dock allowing ships to unload supplies directly into the castle, crucial for enduring a siege. The castle provides superb views eastward across the Menai Strait to the peaks of Snowdonia.
Yes, you can visit the Ruined Fort in Tirwedd Cenedlaethol Ynys Môn. While specific historical details are less documented, it offers an atmospheric experience of an old, abandoned building.
Penrhyn Castle, built in the style of a Norman castle in the early 19th century, is a poignant reminder of social injustices. Its wealth was derived from the slave trade by the Pennant family and later from the slate industry, leading to one of Britain's longest industrial disputes, the Great Penrhyn Quarry Strike.
To fully explore Beaumaris Castle, including its battlements, towers, and exhibits, you should allow at least 2-3 hours. This gives you time to appreciate its architectural significance and historical insights.
The castles are set against scenic backdrops. From Beaumaris Castle, you can enjoy views across the Menai Strait to the peaks of Snowdonia. Castell Aberlleiniog is situated within a serene woodland nature reserve, offering a natural setting with wild garlic and birdsong in spring. Penrhyn Castle also boasts views of Snowdonia and is surrounded by wooded parkland and gardens.


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