Oslo Opera House

Feel the stone under your shoes. It is cool, pale, and slightly uneven, and it slopes gently upward ahead of you. On a bright day the light bounces off this white surface so strongly that many people squint. Gulls call over the water. Somewhere nearby, a child is running uphill. You are standing on a roof, and nobody here will tell you to get off it.

This is the Oslo Opera House, home of the Norwegian National Opera and Ballet. It opened in 2008, on the edge of the Oslofjord, in a district called Bjørvika. The building was designed by the Norwegian architecture studio Snøhetta. Their central idea was simple and unusual. An opera house is often a closed palace for those with tickets. Here, the architects wanted a public landscape that anyone could walk on, at any hour.

Look at the shape around you. The roof rises from the water in long, tilted planes, like a sheet of ice pushed up against the shore. Many visitors read it as a glacier or an iceberg, and that image fits Norway well. The lowest edges of the stone almost touch the fjord. On calm days you can sit right at the water line, with the city behind you and open water ahead.

Here is the first thing many visitors miss. Most of this white surface is Italian marble, quarried at Carrara, the same region that supplied stone for Renaissance sculptors. Italian stone, laid on a Norwegian fjord. Look closely as you walk, and you will see that the slabs are not all identical. Their surfaces are cut in subtle patterns, with ridges and small changes of level. These were designed so that the roof never feels like a flat, empty plaza.

Why does that matter? Because the roof is meant to be used. Joggers climb it. Families picnic on it. Skateboarders were tempted by it from the very first year. In summer, people lie on the warm stone and watch the boats. In winter, snow and ice can make some sections slippery, so careful walking is wise. The building changes with the seasons, and the people on it change with them.

Now turn toward the tall section rising from the centre. That is the fly tower, the space above the stage where scenery is lifted up and lowered down. It is covered in pale aluminium panels with a pattern pressed into the metal. When the sun moves across it, the pattern catches light and shadow differently through the day. It is a practical machine wrapped in a quiet piece of art.

Walk down toward the main entrance, and you will notice tall walls of glass. They let you see straight into the foyer from outside. At night the effect reverses. The lobby glows, and people on the street can watch audiences gathering before a performance. This openness is deliberate. The architects wanted passers-by to feel that the world of opera was not hidden from them.

If you step inside, the mood changes. The white stone gives way to warm wood. A large curving wall of oak rises through the foyer and wraps around the main auditorium. It looks almost like the hull of a ship, built from strips of timber. Here is the second surprise. That wooden wall is not only decoration. It forms the outer shell of the main hall, so you are standing beside the auditorium itself.

The main hall seats well over a thousand people, in a classic horseshoe shape. That form has been used in opera houses for centuries, because it brings audiences close to the stage and helps the sound travel. The interior is lined with dark oak, and the lighting is soft. Even if you do not attend a performance, the foyer gives you a good sense of how the building moves you from bright fjord light into a darker, more focused world.

The building has also gathered serious praise from architects. In 2009 it won the European Union's top prize for contemporary architecture, known as the Mies van der Rohe Award. The award is named after a German modernist architect, famous for buildings of glass and steel. For a young building, that recognition helped establish Oslo as a city where new architecture was taken seriously.

Now look out at the water. Floating on a platform in the fjord is a sculpture called She Lies, by the Italian artist Monica Bonvicini. It is made of glass and stainless steel panels, arranged in sharp, broken angles. Many people see it as a frozen echo of the opera house itself. Its panels turn and reflect the sky, so it never looks quite the same twice.

The Opera House was also the first step in a much larger change. This waterfront was once dominated by roads, docks and industrial land. Over the following years, new neighbours arrived. The tall MUNCH museum, dedicated to the painter Edvard Munch, now stands nearby. So does the Deichman Bjørvika public library. Together they have turned this edge of Oslo into a district for culture, walking and swimming in summer.

Before you leave, walk back up to the highest point of the roof if you can. From there you see the fjord, the islands, the cranes and new towers of the city, and the hills beyond. Feel the wind, which is often stronger up here. Listen to the mix of languages around you. Then, as you walk down the slope again, notice how the stone guides you gently back to the water's edge, and to the city waiting behind it.