By Off the southwest coast of Anglesey, nestled within golden sands and surrounded by tidal waters, lies Ynys Llanddwyn—a mystical island rich in romance, nature, and legend. At its edge stands the Ynys Llanddwyn Lighthouse, better known as Twr Mawr, a whitewashed tower that has become one of the most iconic coastal landmarks in Wales.
More than just a navigational aid, this lighthouse is a symbol of love, heritage, and the enduring beauty of the Welsh coastline.
What Is Ynys Llanddwyn Lighthouse?
The lighthouse on Ynys Llanddwyn is called Twr Mawr, Welsh for “big tower.” Built in 1845, it was designed to guide ships navigating the Menai Strait, one of the most treacherous waterways in Britain. Nearby stands Twr Bach (“little tower”), a smaller structure that predates Twr Mawr and functioned as an earlier beacon.
Though both are now decommissioned, these towers remain historic and architectural gems, attracting thousands of visitors each year.
Location: Where to Find Ynys Llanddwyn Lighthouse
- Ynys Llanddwyn (Llanddwyn Island), Newborough, Anglesey, North Wales
- Set within the Newborough Warren National Nature Reserve
- Accessed on foot via Newborough Beach during low tide
The island is tidal, meaning access is only possible when the tide is out. Visitors are encouraged to check tide times before crossing.
History of Twr Mawr and Twr Bach
Twr Mawr (Big Tower)
- Built: 1845
- Height: 11 meters (36 feet)
- Constructed with limestone and whitewashed for visibility
- Designed to resemble a windmill, though it served as a lighthouse
Twr Bach (Little Tower)
- Likely built in the early 1800s
- Functioned as the original navigational aid
- Shorter and squatter than Twr Mawr, but just as historically significant
These two structures worked together to help mariners navigate the tricky waters near Caernarfon Bay and Porth Dinllaen.
Architecture and Appearance
The lighthouse’s design is simple yet striking. Twr Mawr stands as a white, tapered cylinder, with no balcony or lantern—unlike traditional Victorian lighthouses. It instead functioned as a daymark, using its prominent shape and color to signal its location.
Together with Twr Bach, they form a distinctive silhouette against the island’s dunes, wildflowers, and distant views of Snowdonia.
Things to Do at Ynys Llanddwyn Lighthouse
Photography
Capture stunning shots at sunrise or sunset, when the lighthouse is bathed in golden light and shadows stretch across the sand.
Hiking and Walking
- Explore waymarked trails through Newborough Forest
- Walk across the tidal causeway to the island
- Discover secluded beaches, dunes, and coastal views
Explore Saint Dwynwen’s Chapel Ruins
The island is dedicated to Saint Dwynwen, the Welsh patron saint of lovers. Her chapel ruins sit near the lighthouse, adding a spiritual and romantic touch.
Birdwatching and Wildlife
The area is rich in seabirds, wild ponies, and grey seals, especially near spring and summer.
Best Time to Visit Ynys Llanddwyn Lighthouse
| Season | Why Visit |
| Spring | Wildflowers bloom, seals and birds active, fewer crowds |
| Summer | Warm weather, extended daylight, ideal for long walks |
| Autumn | Crisp air, golden colors, beautiful light for photography |
| Winter | Fewer visitors, dramatic landscapes, best for solitude seekers |
Important: Visit during low tide only. Always check local tide tables before planning your trip.
How to Get There
By Car
- Drive to Newborough Forest car park (satnav: LL61 6SG)
- Parking fees apply
- Toilets and picnic facilities available
On Foot
- Follow signposted paths through Newborough Forest
- Walk along Llanddwyn Beach toward the island (~45-minute walk)
Dog Friendly?
Yes, the area is dog-friendly, though restrictions apply during bird nesting seasons. Keep dogs under control near wildlife.
SEO Keyword Strategy
| Keyword | Usage Area |
| Ynys Llanddwyn Lighthouse | Title, H1, introduction, headings |
| Twr Mawr | Subheadings, historical context |
| Llanddwyn Island lighthouse | Synonym phrases throughout article |
| Romantic places in Wales | Saint Dwynwen section, intro |
| Visit Ynys Llanddwyn | CTA and how-to-visit section |
| Anglesey lighthouse | Broader SEO relevance and context |
Conclusion
Ynys Llanddwyn Lighthouse is more than a maritime monument—it’s a symbol of Welsh identity, romantic legend, and natural beauty. From the spiritual ruins of Saint Dwynwen’s chapel to the windswept sands and dramatic sea views, this spot on Anglesey’s coast holds a timeless charm.
Whether you’re exploring the Wales Coast Path, chasing the light for photography, or seeking a quiet moment of reflection, Twr Mawr and Ynys Llanddwyn offer an unforgettable experience.
FAQs
1. Is Ynys Llanddwyn Lighthouse still active?
No, Twr Mawr and Twr Bach are no longer operational as lighthouses. They are historic monuments preserved for tourism and heritage.
2. Can you go inside the lighthouse?
The lighthouse is not open to the public, but you can walk right up to its base and enjoy panoramic views.
3. How long does it take to walk to the lighthouse?
From Newborough Forest car park, it takes approximately 45–60 minutes to reach the lighthouse on foot.
4. Is Ynys Llanddwyn always accessible?
No. It is a tidal island, so access is only possible during low tide. Always check tide schedules before your visit.
5. What is the story of Saint Dwynwen?
Saint Dwynwen is the Welsh patron saint of lovers. According to legend, she retreated to Llanddwyn Island after a failed romance, where she built a church and dedicated her life to helping others in love.
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