Located on rocky and elevated terrain, this important border town served well as a stronghold from the year 907[2] when it was reclaimed by Sancho I of Pamplona.

[3] In the year 1452, during the Navarrese Civil War, Queen Juana Enríquez de Córdoba moved to the town, then called "Sos".

His birth added "del Rey Católico" to the name of the town,[3] which translates as "of the Catholic King".

[3] The exceptional preservation of the historic center makes a stroll around this town becomes a journey into the past highlighting the city walls, churches, Plaza de la Villa and the Palacio de los Sada, where Ferdinand was born in 1452.

In 2009, on the occasion of the 25th anniversary of La Vaquilla film in the town, a set of sculptures were placed, made in bronze by sculptor José Luis Fernández.