St. Olav's Cathedral is the cathedral of the Roman Catholic Diocese of Oslo. At the time of construction, this church, being built at Hammersborg, near the graveyard of Our Saviour, was located in the countryside outside the then city of Oslo. The work was funded by private donations and fundraising abroad, the most generous individual donor being Queen Josephine, who was a Catholic herself.
The first mass of the church was celebrated on August 24th, 1856, but as there was no Roman Catholic bishop in the country, the church was not consecrated until August 8th, 1896. When the Roman Catholic Diocese of Oslo was established in 1953, St. Olav's was chosen as the episcopal seat and was elevated to the rank of cathedral. It is the second Catholic cathedral in Oslo. The St. Olav's Cathedral was visited by Pope John Paul II when he visited the Scandinavian countries in 1989.
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.