Marseille Cathedral has been a basilica minor since 1896. It is the seat of the Archdiocese of Marseille.
Part of the earlier, much smaller cathedral still remains, alongside the new cathedral. It was built in the 12th century in a simple Romanesque style. The eclectic style is characteristic of the 19th century. Two bays of the nave were demolished in the 1850s, when the new cathedral was built. What remains is the choir and one bay of the nave. It is commonly referred to as the Vieille Major. The composer Charles Desmazures was organist at the old cathedral.
The present cathedral, the Nouvelle Major, was built on an enormous scale in the Byzantine and Roman Revival styles. The foundation stone was laid by Emperor Napoleon III in 1852 and the first service was held in 1893. It was completed in 1896, given the title of minor basilica, and consecrated in 1897. It was built on the site used for the cathedrals of Marseille since the fifth century, principally by the architects Léon Vaudoyer and Henri-Jacques Espérandieu. It is 142 meters long, and the main cupola is 70 meters high. With a capacity of 3,000 seats, it is one of the largest cathedrals in France. It is a listed monument since 1906.
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.