Las Siete Calles or Casco Viejo are different names for the medieval neighbourhood of Bilbao. The names mean Seven Streets or Old Town respectively and it used to be the walled part of the town until the end of the 19th century.
The name come from the oldest part of the neighbourhood which included exactly 7 streets and some much more narrow alleys connecting them, called cantons.
The old quarter is an area of incredible interest in Bilbao, and it is one of the most visited areas of the city
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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.