The Venetian Castle was built during the 15th century in Split. Built just south-west of the Diocletian's Palace along the shoreline, the castle had an irregular pentagonal shape with three towers facing north and overlooking the city. The decision to build the castle was made in 1424, however, it wasn't until 1441 that it was actually built on the grounds of a demolished monastery. By the early 16th century, the castle was in poor condition and it wasn't until the first half of the 17th century that work on improving it began.
By the early 19th century, the castle had lost its defensive purpose and the southern walls were demolished between 1806 and 1807 on the orders of Auguste de Marmont during the Napoleonic Wars. Presently, what remains of the castle is the large central tower and the smaller eastern tower with the wall connecting them, both located on the Radić Brothers Square (Trg braće Radić).
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.