San Salvatore is one of the largest castles in northern Italy. In 1245, the city of Treviso granted the hill of San Salvatore to the Collalto family. They built a castle on top of the hill between the late 13th and early 14th centuries. In 1312, when the castle was complete, Emperor Henry VII granted full jurisdiction of the area to the Collalto family. They planted vineyards in the fields around the castle.
The 16th to 18th centuries were a peaceful period in the area, and the castle was embellished by a number of artists. Its chapel was decorated with frescoes, and a palace called Palazzo Odoardo was also built within the castle.
Following the Battle of Caporetto in 1917, Susegana fell under Austro-German occupation. The castle was used by the occupation forces, and was later bombarded by Italian artillery, severely damaging the structure in the process. The castle was restored between 1943 and 1951.
The castle is now used as a venue for cultural events.
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.