Theatre of Clunia Sulpicia

The Theatre of Clunia Sulpicia is a Roman theatre in the ancient city of Colonia Clunia Sulpicia, in what is now province of Burgos, northern Spain. Built on a hill called Alto de Castro, it is located between the modern-day villages of Coruña del Conde and Peñalba de Castro, in the south of the province of Burgos.

The edifice was built under the reign of Emperor Tiberius to monumentalize the most important city, along with Asturica Augusta, of the Douro basin. The city was in the province of Hispania Citerior Tarraconensis

Source: Wikipedia