The Royal Tobacco Factory, an 18th-century industrial building was, at the time it was built the second largest building in Spain, second only to the royal residence El Escorial. It remains one of the largest and most architecturally distinguished industrial buildings ever built in that country, and one of the oldest such buildings to survive.
Since the 1950s it has been the seat of the rectorate of the University of Seville. Prior to that, it was, as its name indicates, a tobacco factory: the most prominent such institution in Europe, and a lineal descendant of Europe's first tobacco factory, which was located nearby. It is one of the most notable and splendid examples of industrial architecture from the era of Spain's Antiguo Régimen.
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.