INTRODUCTION

This Beaumaris Castle guide stands on the Isle of Anglesey as a prime example of medieval military architecture. Recognized by historians as one of the most impressive castles in Europe. With its near-perfect symmetry and innovative design. Beaumaris Castle was the last and arguably most ambitious of Edward I’s fortresses during his conquest of Wales. Join us as we explore the history and architectural significance of this remarkable structure.
The History of Beaumaris Castle

Construction of Beaumaris Castle began in 1295 under the orders of Edward I. By then, Edward had already established an extensive network of castles in Wales. But he intended Beaumaris to be the crown jewel. Its location on Anglesey was strategic, as it allowed him to secure control over the surrounding lands. However, due to financial constraints and Edward’s involvement in wars with Scotland, the castle was never fully completed.
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Though unfinished, Beaumaris boasts a sophisticated design. Engineered with a concentric layout—a castle within a castle—it features a moat, thick outer walls, and multiple layers of defense. This layout exemplifies medieval military ingenuity, designed to withstand sieges and attacks. Each layer of the castle was carefully planned to create a barrier against invaders, making it one of the most impregnable fortresses of its time.
Architectural Highlights

Beaumaris Castle is often hailed as an example of “architectural perfection.” Its circular towers, grand gatehouses, and evenly spaced walls give it a harmonious symmetry rarely seen in other medieval castles. This was achieved by following a concentric design: a defensive system with two lines of fortifications, each set within the other, providing maximum protection.
Some of the architectural highlights of Beaumaris Castle guide include:
- Gatehouses: The impressive gatehouses are a key feature of Beaumaris Castle. Each was designed with multiple defensive measures, including portcullises and murder holes, to ensure attackers would face resistance every step of the way.
- Moat and Drawbridge: The castle is surrounded by a deep moat, which would have been filled with seawater, adding another layer of defense. A drawbridge provided access to the main entrance, reinforcing the fortress’s security.
- Inner Ward and Towers: The inner ward, or the central area within the castle walls, houses several towers that offered living quarters and storage rooms, all carefully planned for defensive purposes. The towers also allowed for an unobstructed line of sight, providing guards with optimal views of the surrounding landscape.
Though it was never completed, the unfinished nature of Beaumaris only adds to its historical intrigue. Visitors can observe sections that were intended to be developed further. Such as additional walls and living quarters, which give insight into the construction practices and challenges of the medieval period.
Visiting Beaumaris Castle Today

Beaumaris Castle is now a UNESCO World Heritage Site and draws visitors from around the world to marvel. It’s not only an architectural wonder but also a gateway into medieval history. Where visitors can immerse themselves in the lifestyle and defensive strategies of the period.
Visitors today can explore the castle’s maze of corridors, climb the towers to enjoy views of the Menai Strait, and walk along the castle walls, which provide a unique vantage point over the island. The castle grounds are also meticulously preserved, and interpretative signs and exhibits are placed throughout, making it easy to learn about its historical context.
Final Thoughts
Beaumaris Castle is a timeless piece of history that represents both the ambition and the challenges of Edward I’s rule over Wales. It offers a fascinating look into medieval architecture. Military strategy, and the lives of those who once called its walls home. For history enthusiasts and architecture admirers alike. A visit to Beaumaris Castle promises an unforgettable journey back to a time when castles were not just buildings but symbols of power, control. Do check out my Conwy Castle blog and another great caste of north Wales.
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