Irulegui castle is located on the Sierra de Aranguren in the municipality of Laquidáin.
During the Iron Age it there was a castro de los Vascones. This pre-Roman fort was destroyed around 76 BC. as a consequence of the rebellion.
Although there are legends that suggest the existence of the castle (or, at least, of a defensive structure in this place) during the Almanzor raids in the 11th century, the first reliable documents of the castle dates from the late 12th century.
In 1416 the castle was modernized, adding a triangular structure to the front. In 1494, the kings Catalina and Juan III (Juan de Labrit), agreed its destruction before the push of the Beaumonteses, who controlled the fortress, and consequently, the Pamplona Basin.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.