The Basilica of Notre-Dame de Nice was built between 1864 and 1868. It was designed by Louis Lenormand and is the largest church in Nice, but is not the cathedral.
Inspired by Angers Cathedral, it is built in the Neo-Gothic style. Its construction was motivated by a desire to frenchify the city after the County of Nice was annexed to France from Italy, and at the time Gothic buildings were supposed to be characteristically French. Its most prominent features are the two square towers 65 m high, which dominate the east front together with a large rose window featuring scenes of the Assumption of Mary.
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.