Discovering Dau Island: The Home of Vietnam’s National Altitude Zero and Ancient Lighthouse

Located off the coast of Do Son in Hai Phong, Dau Island (Hon Dau) is a destination that offers a unique blend of natural beauty, historical significance, and scientific importance. Known as a 'hidden gem' of Northern Vietnam, the island is most famous for being the site of the National Altitude Zero marker. This critical geographical point serves as the base reference for all topographical elevations across Vietnam, making it a place of immense importance for surveyors and geographers alike. Beyond its scientific role, Dau Island is home to an ancient lighthouse built by the French in the late 19th century. This historic structure still stands as a beacon for maritime navigation, offering panoramic views of the Gulf of Tonkin to those who climb its stairs. The island itself is covered in lush, primeval forests, providing a serene escape from the hustle and bustle of the mainland. For travelers from the US and Europe, Dau Island represents an authentic slice of Vietnamese history and coastal charm. The combination of the 'Altitude Zero' landmark and the colonial-era architecture makes it a fascinating stop for anyone interested in the intersection of science and history. Visitors can explore the rugged coastline, visit ancient temples dedicated to the island’s guardians, and enjoy the tranquil atmosphere of the surrounding sea. Whether you are a history buff, a nature lover, or a curious traveler, Dau Island offers a rich experience that captures the spirit of Hai Phong's maritime heritage. Its preservation as a site of national importance ensures that its stories—and its breathtaking views—will continue to be shared for generations to come.

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