The Magnificent Castles of Wales
Wales boasts more castles per square mile than any other country in Europe. From towering medieval fortresses built by Edward I to crumbling ruins with centuries of stories to tell, these stone sentinels stand guard over Wales's stunning landscapes, offering visitors a journey through the nation's turbulent and fascinating history. Join us as we explore some of the most magnificent castles that make Wales a paradise for history enthusiasts and architecture lovers alike.
Visitor tip: Many Welsh castles are part of Cadw, the Welsh government's historic environment service. Consider purchasing a Cadw Explorer Pass if you plan to visit multiple sites, as it offers unlimited access to over 100 historic attractions.
The Magnificent Castles of Edward I
The most impressive and well-preserved castles in Wales were built during the reign of Edward I, the English king who conquered Wales in the late 13th century. His ambitious building program produced what historians call the "Iron Ring" of castles – a series of fortifications designed to encircle and subdue North Wales.
Of these, Caernarfon Castle stands as perhaps the most magnificent. With its distinctive polygonal towers and banded masonry (inspired by the walls of Constantinople), Caernarfon was designed not just as a military stronghold but as a symbol of English imperial power. It was here in 1969 that Prince Charles was invested as Prince of Wales, continuing a tradition begun by Edward I, who presented his infant son to the Welsh as their new prince in 1284.
Equally impressive is Conwy Castle, with its eight massive towers and high curtain walls that remain remarkably intact. The castle forms part of Conwy's medieval town walls, which stretch for three-quarters of a mile and are among the finest and most complete in Europe. From the battlements, visitors can enjoy breathtaking views of the Conwy Estuary and Snowdonia mountains beyond.
Harlech Castle, dramatically perched on a rocky outcrop overlooking Cardigan Bay, demonstrates the military genius of Edward's master architect, James of St. George. Its concentric design includes a massive gatehouse that served as both defensive stronghold and comfortable royal accommodation. Harlech's seemingly impregnable position inspired the stirring song "Men of Harlech," which commemorates the longest siege in British history when the castle held out for seven years during the Wars of the Roses.
Completing Edward's masterworks is Beaumaris Castle on the Isle of Anglesey. Though never finished, Beaumaris represents the pinnacle of concentric castle design with its perfect symmetry and elaborate water defenses. Military historians consider it technically the most perfect castle in Britain – a "castle designer's dream come true."
Welsh Resistance and Native Castles
While Edward's castles dominate the North Welsh landscape, Wales has many older fortifications built by Welsh princes who resisted English domination. Among these, Castell y Bere, constructed by Prince Llywelyn the Great in the early 13th century, stands as a testament to Welsh military engineering. Built to guard a strategic mountain pass in southern Snowdonia, its ruins offer some of the most spectacular views in Wales.
In mid-Wales, Dolwyddelan Castle was the birthplace of Llywelyn the Great and served as an important mountain stronghold. Though smaller than Edward's massive structures, its dramatic setting against the Snowdonian mountains makes it one of Wales's most photogenic castles.
Castell Dinas Brân near Llangollen perches dramatically atop a steep hill and predates Edward's conquest. According to legend, it contains the Holy Grail, brought to Wales by Joseph of Arimathea. While visitors are unlikely to find the sacred chalice, they will discover panoramic views that amply reward the challenging climb.
Discover Wales's Castle Heritage
Our curated Welsh castle tours take you beyond the tourist routes to explore both famous fortresses and hidden gems across the country.
Enquire About Castle ToursRomantic Ruins and Victorian Revivals
Not all Welsh castles are medieval fortresses. The 19th century saw a Gothic revival that inspired wealthy industrialists to build or restore castles as romantic country homes. Castell Coch (Red Castle) near Cardiff appears like a fairy-tale vision rising from ancient beech woodlands. Though incorporating the remains of a genuine medieval castle, its current appearance owes much to the imagination of Victorian architect William Burges, who transformed it into an elaborate Gothic fantasy for the 3rd Marquess of Bute.
Similarly, Penrhyn Castle near Bangor is not a true castle but a 19th-century country house built to resemble one. Constructed for the Pennant family, who made their fortune from Jamaican sugar plantations and local slate quarries, it features opulent interiors that showcase Neo-Norman architecture at its most extravagant.
Among genuine ruins, Tintern Abbey in the Wye Valley – while technically not a castle – deserves mention for its romantic allure. This 12th-century Cistercian abbey, immortalized by Wordsworth's poetry and Turner's paintings, represents the picturesque aesthetic that drew many 19th-century tourists to Wales's historic sites.
Coastal Defenders
Wales's extensive coastline required specialized defenses, resulting in some uniquely situated castles. Pembroke Castle, birthplace of Henry VII (the first Tudor king), occupies a strategic position on a rocky peninsula surrounded by the Pembroke River. Its massive round keep – the largest in Wales – has walls 19 feet thick and stands over 75 feet high.
Further along the Pembrokeshire coast, Manorbier Castle presents the rare example of a relatively intact Norman castle that was never upgraded with more elaborate defenses. Its picturesque setting overlooking a beautiful beach made it a favorite of the travel writer Gerald of Wales, who was born there in the 12th century and described it as "the pleasantest spot in Wales."
Perhaps the most dramatically situated coastal fortress is Carreg Cennen Castle in Carmarthenshire. Perched atop a limestone crag 300 feet above the River Cennen, its ruins command spectacular views across the Brecon Beacons. A natural cave beneath the castle adds to its mystique and may have served as both a water source and emergency escape route.
Living History and Cultural Significance
Beyond their architectural splendor, Welsh castles serve as venues for cultural celebration and historical reenactment. Caerphilly Castle, with its famous leaning tower that out-leans Pisa, hosts an annual Big Cheese Festival celebrating local food traditions. Powis Castle near Welshpool, while originally built by Welsh princes, is now renowned for its spectacular terraced gardens and the Clive Museum, housing artifacts from India that reflect Wales's connections to the wider world.
Many castles feature interactive exhibits that bring history to life, from medieval combat demonstrations at Beaumaris to falconry displays at Cardiff Castle, whose Victorian Gothic interiors represent another spectacular example of 19th-century romanticism.
These stone monuments also continue to inspire artistic expression. Filmmakers frequently use Welsh castles as dramatic backdrops, with Doune Castle featuring in "Monty Python and the Holy Grail" and various locations appearing in "Game of Thrones" and "Doctor Who."
Planning Your Castle Adventure
Visiting Welsh castles requires some planning to make the most of your experience. The North Wales coast offers the highest concentration of Edward I's fortresses, with Conwy, Caernarfon, and Beaumaris all accessible within a single day's drive. However, to truly appreciate these magnificent structures, consider dedicating at least half a day to each major castle.
For photography enthusiasts, early morning or late afternoon light brings out the texture and color of the ancient stonework. Castle enthusiasts should consider visiting in the shoulder seasons (May-June or September-October) when sites are less crowded but weather remains favorable.
Many castles host special events throughout the year, from medieval fairs to Christmas markets and outdoor theatrical performances. Checking event calendars when planning your visit can add an extra dimension to your castle experience.
Wales's castles offer more than a journey through history – they provide a window into the soul of a nation that has fiercely defended its identity through centuries of conflict and change. Whether you're drawn by architectural magnificence, historical significance, or simply the romantic allure of ancient stone against Wales's breathtaking landscapes, these enduring monuments promise an unforgettable experience for visitors of all ages.