Embark on a guided tour of Bilbao's medieval Old Town neighborhood and Castro Urdiales village along the Bay of Biscay. Explore the tapered streets by foot alongside an informative guide in Old Town, as you pass landmarks such as the gothic Cathedral of Santiago and the open-air Plaza Nueva, a popular meeting place for dining and shopping. Travel by coach to the seaside Castro Urdiales fishing village and wander the towering Castle of Santa Ana.