The submarine base of Saint-Nazaire is a large fortified U-boat pen built by Germany during the Second World War. Before the war Saint-Nazaire was one of the largest harbours of the Atlantic coast of France. During the Battle of France, the German Army arrived in Saint-Nazaire, in June 1940. The harbour was immediately used for submarine operations.
In December, a mission of the Organisation Todt inspected the harbour to study the possibilities to build a submarine pen invulnerable to air bombing from England. Work soon began under the supervision of engineer Probst.
The selected space was that of the docks and buildings of the Compagnie Générale Transatlantique, which were razed. Building began in February 1941. The adjacent dry-dock in Saint-Nazaire dock was the target of Operation Chariot, a British commando raid in 1942, the U-boat pens were a secondary target of the raid. The attack successfully disabled the dry-dock by ramming an explosive-filled destroyer into it, and by demolition teams wrecking the pumps and electrical system.
The base was equipped with 62 workshops, 97 magazines, 150 offices, 92 dormitories for submarine crews, 20 pumps, 4 kitchens, 2 bakeries, two electrical plants, one restaurant and a hospital. On the roof is one completed and one uncompleted M19 Maschinengranatwerfer automatic 5 cm mortar bunker.
The zone of the base was abandoned for a long time. In 1994, the municipality of Saint-Nazaire decided to re-urbanise the base, in a project name Ville-Port. The base now features several museums, including a mockup of a transatlantic liner called the Escal'Atlantic, and the French submarine Espadon.
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.