South Stack Cliffs RSPB Reserve is a coastal bird sanctuary on Holy Island, Anglesey, known for dramatic sea cliffs and exceptional seabird populations, offering superb birdwatching and coastal hiking opportunities.
South Stack Cliffs RSPB Reserve is located on the northwest tip of Holy Island, Anglesey, Wales, where towering sea cliffs meet the Irish Sea. The reserve protects a significant area of rugged cliff habitat that supports some of the UK's most important seabird colonies, including puffins, razorbills, guillemots, and kittiwakes. The reserve's geography features sheer cliffs up to 70 meters high, interspersed with grassy slopes and maritime heath, creating ideal nesting conditions for seabirds. South Stack Lighthouse, a prominent historic landmark built in 1809 and accessible to visitors, stands as a beacon overlooking these dramatic cliffs. The reserve's ecology extends beyond seabirds, with migratory birds, rare plants, and coastal invertebrates contributing to its diversity. Visitors can explore several trails that wind along the cliff tops, providing breathtaking views of the sea and birdlife below. The site is a prime destination for birdwatchers, photographers, and hikers seeking immersive coastal nature experiences. Educational displays at the reserve’s small visitor information point provide insight into the importance of the site for wildlife conservation. The South Stack Cliffs area is also important for its geological features, showcasing layers of ancient rock formations shaped by natural forces over millennia. By combining unique wildlife habitats with dramatic coastal scenery and heritage landmarks, South Stack Cliffs RSPB Reserve offers a distinctive and engaging outdoor destination.
South Stack Lighthouse – historic coastal beacon open to visitors
Seabird colonies including puffins, razorbills, and guillemots
Panoramic cliff-top views over the Irish Sea and Holy Island
Coastal walking trails with dramatic sea cliff scenery
An iconic 19th-century lighthouse perched on a rocky islet, accessible by a steep flight of steps, offering sweeping seascape views and operational light.
Sheltered cliff ledges hosting large colonies of puffins, razorbills, guillemots, and kittiwakes during breeding season.
Habitat supporting rare coastal plants and providing nesting ground for migratory birds along cliff tops.