Ruins of Aose Castle are located close to the port of Åhus. This fortress, probably built in the 12th century and again in 1286, was protected by a high wall and a moat spanned by a drawbridge. It was destroyed in 1569 by Duke Karl, later to become King Karl IX of Sweden, and the ruins were gradually covered by drifting sand before being excavated in the late 1800s. It has always been widely assumed that the castle was built on the orders of Archbishop Eskil, but recent excavations have revealed new evidence that suggests that Canute the Great, King of Denmark and England, was the first lord of Aose Castle.
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.