
Construction began at the end of the 15th century. The building is built of masonry. The interior is divided into three floors. The tower was commissioned by Ochoa de Salazar, grandson of Don Lope. The building's strategic location meant that it controlled the transit of both people and goods both through the port and along the roads.
The building has had its ups and downs throughout its history. One of the more significant of these events was the fire that ravaged it in 1934. It was rebuilt between 1958 and 1959 according to a project by the architect Joaquín de Irizar. Today, the Tower is owned by the local council and following its most recent refurbishment, it is used to house a museum and a restaurant.