The Bay of Santander is a picturesque inlet located on the northern coast of Spain, within the region of Cantabria. It is known for its stunning natural beauty, featuring sandy beaches, lush green hills, and clear blue waters. The bay is surrounded by the city of Santander, which serves as a major port and tourist destination. The bay is also home to several small islands, including Isla de Mouro, which is known for its lighthouse. The area offers various recreational activities such as sailing, swimming, and hiking, making it a popular spot for both locals and visitors seeking outdoor adventures.