The building was designed by architect
Henning Larsen in close and often problematic collaboration with
Mærsk Mc-Kinney Møller. Mærsk wanted the building to have several features in its design: it would not become obsolete in function and appearance due to any fiscal compromise. He personally tested seats and materials, he visited many places in the world to see how opera buildings were constructed and how the building materials were looking after having been exposed over time to weather. Henning Larsen, on the other hand, was trying to make sure that the original architectural ideas were carried through the construction process, especially concerning the large glass surface front, which became a matter of great controversy and subsequent compromise. The building exterior is faced with Jura Gelb, a beige
limestone quarried in Germany. It is situated on ground that is surrounded by
canals that are designed to give the impression the structure is on an island. The bridges constructed to access the building were made from
oak trees originally planted in the 19th century for use in replacing the national
fleet that was lost with the
bombardment of Copenhagen in September 1807. The front of the building was originally designed with large glazing panels in order to see the shell of the auditorium from the harbor side. However, Mærsk emphasized that glass does not age well, so the façade was changed to a metal grid. The front façade of the building was designed and built by Austrian façade specialists
Waagner-Biro. The
foyer floor is
Sicilian Perlatino
marble. The central foyer holds three spherical chandeliers created by the
Icelandic artist
Olafur Eliasson. Each chandelier consists of several pieces of glass, which are semipermeable allowing some light to pass, and some to reflect. The patterns change when viewed from different angles. Designer and artist
Per Arnoldi designed the logo for the opera, visible in the marble floor just inside the entrance. Painter and sculptor
Per Kirkeby (1938–2018) created four bronze reliefs for the wall to the auditorium, just below the maple wood part. Per Arnoldi also designed the
Front curtain for the main stage, made of multiple color threads creating a three-dimensional effect, that does not reproduce well in photographs. {{cite web|url = https://www.kulturarv.dk/kid/VisKunstner.do?kunstnerId=982&wsektion=alle The rear wall of the foyer and
balcony faces are
maple. The architects' original intention was to make the wood look like that from an old violin. However using the same technique would have been far too expensive. Instead, they have tried to imitate the color using more traditional staining techniques, and the result is very close (the official homepage says differently, but the guides in the Opera tell this story). Due to the orange color and its form, it is suitably known by locals as the
pumpkin. The auditorium
ceiling is gilded with about 105,000 sheets of almost pure
carat (100%) gold leaf. The floor in the main auditorium is
smoked oak. The balcony faces have been designed with openings in a special pattern to improve sound quality, and
LED-based lighting that can be illuminated in a variety of patterns. == Controversy ==