Castillo de Leiva in La Rioja is a rectangular fortified palace measuring 22 meters long by 7 meters wide, built in the 16th century by Antonio de Leiva as a memorial to the Battle of Pavia. Replacing an earlier 14th-century tower destroyed in 1478, the current structure features dressed stone exterior walls, rounded stone infill, a columned interior courtyard, and four corner towers—three octagonal and one decagonal keep. Originally surrounded by a perimeter moat and accessed from the eastern wall, the fortress belonged to the Leiva family and later the Counts of Baños before passing to municipal ownership in 1998 and subsequently to the La Rioja Government in 1999, ensuring its preservation as an important regional heritage monument.
