Biscay is a bay located in the northeastern part of Spain and the southwestern part of France. It is bordered by the Basque Country and the region of Aquitaine. The bay is known for its rich marine biodiversity and is an important area for fishing and shipping activities. The Bay of Biscay is also famous for its often rough seas and strong winds, making it a challenging area for navigation. It is home to several notable cities, including Bilbao in Spain and Brest in France, which are significant cultural and economic centers in their respective countries.