Due to its strategic position, the Sobroso castle was known as 'the key of the Kingdom of Galicia'. The name of the Castle, and the village itself, comes from the Latin SUBEROSUM, in reference to the 'sobreiras', Quercus suber or cork trees that once surrounded it.
The oldest reference to Sobroso Castle dates back to 1096. The castle that stands today dates back to the 14th or 15th century construction consisting of 2 enclosures. The outer one is irregular and the entrance is made through a drawbridge, and the inner one is rectangular with its keep on its weakest side.
In the 15th century, Sobroso Castle saw the fight between the Sarmientos and Pedro Madruga, but after that the castle wasn't much active.
The castle was restored from its ruinous state thanks to the efforts of local journalist Alejo Carrera Muñoz, who in 1923 bought the ruins of the castle from the Count of Torre Cedeira. He carried out the restoration work single-handedly, without any help from local authorities, until his death in 1967. In 1981, the neighbouring municipality of Ponteareas purchased the castle from Carrera's only child, Zita Teresa Carrera Ferreira, for 30 million pesetas. From 1995 onwards, the local council began their own restoration work on the castle.
The castle currently houses a cultural and ethnographic museum.
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.