Teatro dell'Opera di Roma

Stand for a moment in the small square outside. The facade is plain and pale, almost severe, with tall rectangular windows and a flat, orderly front. Traffic hums along the nearby streets, and somewhere a scooter climbs through its gears. Nothing here prepares you for what waits inside, and that contrast is the first secret of Rome's opera house.

This is the Teatro dell'Opera di Roma, the city's main stage for opera and ballet. It sits on the Viminale, one of the seven hills of ancient Rome, a short walk from Termini station. Most visitors pass through this district on their way somewhere else. They walk past hotels, cafés and government offices, and many never guess that one of the most important stages in Italian music stands a few steps away.

The story begins in the late nineteenth century with a man named Domenico Costanzi. He was a builder and hotel owner, not an aristocrat or a prince. Rome had only recently become the capital of a united Italy, and the city was growing fast. New neighbourhoods were rising around the railway station. Costanzi believed the new capital deserved a large, modern theatre, and he decided to build one himself, with his own money.

The Teatro Costanzi opened in 1880. Its architect was Achille Sfondrini, a designer who knew theatres well. The opening night featured Rossini's opera Semiramide. For a city that had long relied on smaller, older venues, this was something new — a big public house of music, built by private enterprise for a modern city. Costanzi's gamble was risky, and in the early years the theatre did not always pay its way.

Then, in 1890, came a night that changed its fortunes. A young and little-known composer, Pietro Mascagni, presented his short opera Cavalleria rusticana. It is a fierce story of jealousy and revenge in a Sicilian village. The audience reacted with huge enthusiasm, and the opera spread across the world. With it, a new style of Italian opera gained momentum, focused on ordinary people and raw emotion rather than kings and myths.

Ten years later, the theatre hosted an even more famous premiere. In January 1900, Giacomo Puccini's Tosca was performed here for the first time. And here is a detail many visitors miss. Tosca is a Roman story. Each act is set in a real place in this city — the church of Sant'Andrea della Valle, the Palazzo Farnese, and the Castel Sant'Angelo by the Tiber. The audience that first night heard music about streets they could walk home through.

In the 1920s, the City of Rome bought the theatre. It was renamed the Royal Opera Theatre, and a major renovation followed under the architect Marcello Piacentini. He reshaped the building and gave it the sober, modern facade you see today. The main entrance moved to face this square, now named after the great tenor Beniamino Gigli. After the Second World War, when Italy became a republic, the word Royal was dropped, and the house took its present name.

Now imagine stepping through those doors. The calm exterior gives way to red velvet, gold decoration and warm light. The auditorium follows the classic Italian horseshoe shape, with tiers of boxes rising one above another. This shape is not only beautiful. It lets the audience see each other almost as clearly as they see the stage, and for generations, watching the crowd was part of the evening.

Look up, and the ceiling carries a painted fresco by Annibale Brugnoli, a survivor from the original Costanzi theatre. Hanging at its centre is a great crystal chandelier, added during the renovation of the 1920s. When the lights dim before a performance, the chandelier fades slowly, and the room falls quiet. It is a small ritual, but regular opera-goers say it is the moment the evening truly begins.

Here is a second surprise. In summer, the company often leaves this building entirely. Since the 1930s, the opera has staged outdoor performances among the ruins of the Baths of Caracalla, a vast bathing complex built by a Roman emperor in the third century. Picture an orchestra tuning up under the night sky, framed by ancient brick walls. For many Romans, a summer evening at Caracalla is as much a part of the opera year as the winter season here.

The house is also home to a ballet company and a ballet school, and its orchestra and chorus perform throughout the year. On a working day, you may notice stage doors opening at the side of the building, delivery vans, and performers arriving with bags and instrument cases. It is a living workplace, not a museum. Hundreds of people — carpenters, costume makers, musicians and dancers — keep it running.

If you can, come back for a performance, or join a guided tour on a day when one is offered. Even a few minutes inside the auditorium changes how you see this plain facade. Dress codes are relaxed for most seats, but many Romans still make an effort for an evening at the opera. Arriving early gives you time to watch the boxes fill and to hear the orchestra warming up behind the curtain.

Before you walk on, look once more at the quiet front of the building. Behind those pale walls, Cavalleria rusticana and Tosca first met their audiences, and a hotel owner's bold idea became the opera house of a capital city. As you leave the square, listen to the traffic and the voices around you. Somewhere inside, perhaps, someone is rehearsing — and the music of Rome is still being made here today.