| Castle of Arnedo | |
|---|---|
| Native name Castillo de Arnedo (Spanish) | |
|   View of the castle | |
|   | |
| Location | Arnedo, Spain | 
| Built | Of Muslim origin, built over Roman remains [1] (9th century) [2] | 
The Castle of Arnedo is a fortification located in Arnedo in the autonomous community of La Rioja, Spain. It overlooks the city and the course of the Cidacos River. [3] The first defensive structures built on the hill, where the castle is located now, date from ancient Roman times. [1] [4] After the Muslim invasion, the conquerors built a new defensive fortress—dated to the 9th century [2] —over the existing remains. [2] It was the most important castle in the region during the Middle Ages, [5] and it changed hands between Muslims and Christians several times during the Reconquista. [5] [6] [7]