Niterói Contemporary Art Museum

Listen first. Wind comes off the water and moves across the open plaza. Gulls call somewhere below the cliff edge. The ground under your feet is pale and smooth, and it slopes gently toward a shallow pool. Above that pool, a white shape seems to float in the air. It looks like a saucer, or a flower, or a cup set down on a rock by a giant hand. This is the Niterói Contemporary Art Museum, and it sits on a headland over Guanabara Bay.

Most visitors call it simply the MAC. It opened in 1996, and it was designed by Oscar Niemeyer, the Brazilian architect best known for the government buildings of Brasília. By the time this museum was finished, Niemeyer was already close to ninety years old. He kept working for many years after that, and he lived to the age of one hundred and four. So this building is not an early experiment. It is the work of a man near the end of a very long career.

Niemeyer liked to compare this museum to a flower. Look at the base and you can see why. A single narrow cylinder rises from the middle of the pool, like a stem. Everything above it widens outward, layer by layer, into a broad round body. The whole upper structure rests on that one central support. There are no columns around the edge holding it up. That is the first surprise here — the widest part of the building touches nothing at all.

The structural engineer who made this possible was Bruno Contarini, a long-time partner of Niemeyer's. Reinforced concrete allowed the upper floors to reach out from the centre and stay there. Stand near the pool and look up at the underside. You will see a clean curved surface with no beams or supports. Builders of earlier centuries could not have done this. It depends on steel rods hidden inside the concrete, carrying the weight back toward the stem.

Now look at the water around the base. The pool is shallow, and on a calm day it holds a copy of the museum upside down. In that reflection the building becomes a full shape, top and bottom, like a disc spinning in space. Many people compare it to a flying saucer, and Niemeyer did not seem to mind. The pool also keeps visitors at a distance from the stem, which makes the floating effect stronger as you approach.

Then there is the ramp. It is painted a strong red, and it curls away from the building in a long loop before it reaches the entrance. You do not walk straight in. You walk out, around, and up, and the bay turns slowly around you as you climb. Niemeyer loved free curves, and he often said that straight lines did not interest him. This ramp is one of his clearest answers to the straight line.

As you walk the ramp, turn and look across the water. The city on the far side is Rio de Janeiro. On a clear day you can pick out Sugarloaf Mountain, the rounded granite peak at the mouth of the bay. Higher up and further inland, you may see the statue of Christ the Redeemer on its own summit. Here is the second surprise. Many people visit Rio for its views, but some of the widest views of Rio are from here, in Niterói.

The museum stands on a viewpoint called Boa Viagem, which means good journey in Portuguese. Just off the point, a small rocky island sits in the water, linked to the shore. The rocks below the plaza drop steeply to the sea, and on windy days you can hear waves breaking against them. Before the museum was built, this was already a place where local people came to look out over the bay. Niemeyer placed his building so it would not block that outlook.

Inside, the design continues to face outward. A continuous band of windows wraps around the upper gallery, and the glass is tilted out at an angle. Walk along it slowly. The window frames the bay as one long, curved panorama — sea, islands, boats, and the distant city. The main exhibition space sits at the centre, with the view running around it like a ring. Some visitors find themselves looking out as much as they look at the art.

The art itself is Brazilian and contemporary. The core of the collection was assembled by a private collector, João Sattamini, and it is held at the museum on long-term loan. It brings together many Brazilian artists from the second half of the twentieth century onward. Exhibitions change over time, so what hangs on the walls today may differ from what a friend saw last year. Treat each visit as a fresh look rather than a fixed display.

The museum is also part of a larger project. Along the Niterói waterfront there is a group of other buildings by Niemeyer, often called the Niemeyer Way. They include public spaces, a theatre, and other civic buildings, all with the same white concrete and soft curves. The MAC was the first and the most widely recognised of them. Its success helped persuade the city to invest in more of his designs along the shore.

The neighbourhood around you is quieter than central Rio. Below the headland, Icaraí beach curves along the bay, with apartment towers behind it and joggers on the promenade. Families walk dogs along the seafront in the evening. Many visitors arrive by ferry from Rio, crossing the bay in a short ride, and then continue along the coast to reach the museum. That crossing gives you a view of this building from the water, small and white on its rock.

Before you leave, walk back to the edge of the plaza and stand still for a moment. Look at the white disc, the red ramp, and the flat blue of the pool. Then look past them to the bay, the boats, and the hills of Rio beyond. The building does not try to compete with that landscape. It sits on the rock and points you toward it. As you walk away, turn around once more — the shape changes with every step you take.