St. Mary's Island is a small island located off the coast of Northumberland, England. It is known for its scenic beauty, sandy beaches, and rich history. The island is home to the iconic St. Mary's Lighthouse, which was built in 1898 and is a popular landmark for visitors. The island is accessible by foot during low tide, allowing visitors to explore its natural surroundings. It features diverse wildlife and offers opportunities for birdwatching and coastal walks. St. Mary's Island is a tranquil destination, attracting nature lovers and those seeking a peaceful retreat.