Museum of Aviation, Belgrade

Stand still for a moment and listen. Somewhere beyond the trees, a jet engine spools up on the runway. It starts as a low hum and climbs into a long, rising roar. Then it fades into the sky. You are standing beside Belgrade's main airport, in front of a building made of glass and pale metal. It sits on the flat land like a giant lens. This is the Museum of Aviation, and the sound of real flight is part of the visit.

The location is not an accident. The museum sits right next to Nikola Tesla Airport, in the Surčin area west of the city centre. Aircraft belong near runways, and here the old machines rest within earshot of new ones. Many visitors notice this only after a few minutes. They hear a passenger jet take off overhead while they look at a propeller fighter that last flew generations ago. Past and present share the same air.

Look first at the building itself, because it is one of the exhibits. The structure has a circular plan. Its glass walls rise and curve inward toward a broad, flattened top. People in Belgrade compare it to a glass mushroom, or to a flying saucer that landed in a field. The design is usually credited to the Sarajevo architect Ivan Štraus. The museum moved into this home in the late 1980s, while Yugoslavia still existed as one country.

The institution is older than the building. The museum was founded in the late 1950s. For decades, its collection lived in storage and in temporary spaces. Aircraft are difficult to keep. They are large, fragile and hungry for space. A plane left outside slowly loses its paint, its fabric and its rubber seals. So the glass hall was a promise to these machines — a roof, light, and a chance to be seen whole.

Step inside and the light changes. The glass walls let daylight fall across wings and fuselages from every side. There are no dark corners here, as in many museums. The aircraft stand on the floor and hang from above, at different heights. Walk in a slow circle, because the round hall rewards that. Each step shows you a different nose, a different tail, a different shadow on the polished floor.

The collection is large. The museum holds well over a hundred aircraft, but only part of them fits on display at any one time. The rest wait in storage or stand outside on the surrounding grounds. Beyond the planes, the archive keeps engines, instruments, uniforms, photographs and documents. Together, they tell the story of flight in this region, from early pioneers to the jet age.

Here is the first detail many visitors miss. Among the wartime fighters, look for the Italian Fiat G.50. It is a small, rounded single-seat fighter from the years around the Second World War. Many aircraft of that era were scrapped after the war, melted down for their metal. This example is widely described as the only surviving G.50 in the world. A machine that once existed in hundreds now survives as a single airframe — and it is here.

The Second World War display brings together aircraft from opposing sides. British fighters stand not far from German ones. During that war, they would have met only in combat. Now they share one quiet floor, under one glass roof. Take a moment to compare their shapes. Notice the different curves of the wings and the different placement of the cockpits. Each design carries the ideas of the engineers who built it.

A large part of the collection tells a local story. Yugoslavia built its own aircraft. Factories and design bureaus in the country produced trainers, light attack jets and sport planes. Names such as Ikarus and Soko appear on the labels. These planes trained generations of pilots and flew at air shows across the region. For many older visitors from the Balkans, these shapes are familiar. They saw them above their towns as children.

Now comes the second surprise, and it is a sober one. In one part of the museum, you will find the remains of an American F-117 stealth aircraft. It was shot down near Belgrade in 1999, during the NATO bombing of Yugoslavia. The stealth jet was designed to stay invisible to radar. Its loss made news around the world. Here you can see pieces of it, including parts of the wing and the cockpit canopy.

The display from 1999 also includes wreckage from other aircraft of that conflict. For local visitors, this section carries strong memories of a difficult spring. For visitors from abroad, it can be a surprising sight. It is rare to stand this close to parts of a modern military aircraft. Take your time here. Read the labels, and consider how differently people from different countries may see the same pieces of metal.

Before you leave, walk out to the grounds around the building. Larger aircraft stand in the open air, because they are too big for the hall. Airliners, transport planes and military jets line up on the grass and the concrete. Up close, their size becomes clear. You can stand under a wing and feel its shadow. The paint shows weather and age, and some surfaces carry patches from repair and restoration.

Now turn back toward the glass building one more time. In the afternoon, the walls catch the sky, and the planes inside sit behind reflected clouds. Listen again. Another jet is probably taxiing or climbing beyond the trees. The machines around you once made that same sound. They carried pilots, passengers and hopes. Today they stay on the ground, and they let you come close. As you walk back, look up — the next plane is already in the air.