The Villaviciosa Estuary is a natural estuary located in the northern region of Spain, specifically in the Asturias province. It is characterized by its rich biodiversity, serving as a habitat for various species of birds and marine life. The estuary is also known for its scenic landscapes, featuring a mix of wetlands, mudflats, and salt marshes. This estuary is part of the Villaviciosa Natural Park, which aims to protect its unique ecosystems. The area is popular for outdoor activities such as birdwatching and hiking, attracting nature enthusiasts and tourists alike. Its ecological significance makes it an important site for conservation efforts.