Urdaibai is a UNESCO Biosphere Reserve located in the Basque Country of Spain. It encompasses a diverse landscape that includes wetlands, cliffs, and beaches, making it a vital area for both wildlife and plant species. The region is known for its rich biodiversity and is home to various protected species. The Urdaibai estuary is a significant feature of the reserve, providing essential habitats for migratory birds. The area also includes charming towns like Gernika, famous for its historical significance and cultural heritage. Visitors can enjoy outdoor activities such as hiking, birdwatching, and exploring the stunning natural scenery.