Loevestein Castle (Slot Loevestein in Dutch) is a medieval castle built by the knight Dirc Loef van Horne (hence 'Loef's stein') between 1357 and 1397. It was built in a strategic location where the Maas and Waal rivers come together. At first it was a simple square brick building, used to charge toll from trading vessels using the rivers. In the 16th century (around 1575, orders given by William the Silent) it was expanded to a larger fortress surrounded by earthen fortifications with two (later three) stone bastions on the northern side, two moats, an arsenal, and housing for a commander and soldiers.
Loevestein changed hands twice between the Northern Dutch and the Spanish (December 9, 1570 it was taken by the Geuzen, ten days later Spanish again, and from June 25, 1572 Dutch till this day), the warring parties of the day. The castle became a prison for political prisoners in 1619. One famous inmate was the eminent lawyer, poet and politician Hugo de Groot (Hugo Grotius) often presented as the 'father of modern international law', who was serving a controversially imposed life sentence from 1619. In 1621 Hugo de Groot managed to pull off a daring escape in a book chest. The idea for this escape came from his wife Maria van Reigersberg (also living in the castle). He subsequently became the Swedish Ambassador to France for 10 years. Another high profile inmate was the English Vice-Admiral George Ayscue.
Until the Second World War Loevestein Castle was part of the Nieuwe Hollandse Waterlinie, the main Dutch defense line that was based on flooding an area of land south and east of the western provinces. Currently the castle is used as a medieval museum and function centre.
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.