https://en.wikipedia.org/wiki/Oslo_Opera_House

The roof of the building angles to ground level, creating a large plaza that invites pedestrians to walk up and enjoy the panoramic views of Oslo. While much of the building is covered in white granite and La Facciata, a white Italian carrara marble, the stage tower is clad in white aluminium, in a design by Løvaas & Wagle that evokes old weaving patterns.

The lobby is surrounded by 15 m (49 ft) tall windows with minimal framing and special glass that allows maximum views of the water. The roof is supported by thin angled columns also designed not to interfere with views.

Interior surfaces are covered in oak to bring warmth to spaces in contrast to the coolness of the white exterior. The main auditorium is a horseshoe shape and illuminated by an oval chandelier containing 5,800 handmade crystals. Seats include monitors for the electronic libretto system, allowing audiences to follow opera libretti in Norwegian and English in addition to the original language