Urdaibaiko biosfera erreserba, also known as the Urdaibai Biosphere Reserve, is a protected area located in the Autonomous Community of the Basque Country, Spain. This reserve covers an area of 22,000 hectares and is home to a diverse range of flora and fauna. The reserve is also a popular destination for photographers, with its stunning landscapes, picturesque villages, and unique wildlife. Some of the best photography locations in Urdaibaiko biosfera erreserba include the Oka estuary, the Urdaibai Bird Center, the San Juan de Gaztelugatxe island, and the beaches of Laida and Laga.