Old Aker Church
Old Aker Church () is a medieval era church located in Oslo, Norway. An active parish, the church is the oldest existing building in Oslo. The church is surrounded by Old Aker Cemetery.
Oslo Opera House
The Oslo Opera House () is the home of The Norwegian National Opera and Ballet, and the national opera theatre in Norway. The building is situated in the Bjørvika neighbourhood of central Oslo, at the head of the Oslofjord. It is operated by Statsbygg, the government agency which manages property for the Norwegian government. The structure contains 1,100 rooms in a total area of . The main auditorium seats 1,364 and two other performance spaces can seat 200 and 400. The main stage is wide and deep. The angled exterior surfaces of the building are covered with marble from Carrara, Italy and white granite and make it appear to rise from the water. It is the largest cultural building constructed in Norway since Nidarosdomen was completed circa 1300.