The square was laid out in 1584 according to the plans of Ascanio Vitozzi.
Palazzo Madama houses the Civic Museum of Ancient Art, which spans from the Middle Ages to the 18th century.
The square is flanked by the Teatro Regio, one of Italy's most important opera houses, designed by Carlo Mollino.
Underground tunnels from the 18th century used for military defense run beneath the square.
The facade of the San Lorenzo Church, which opens onto the square, was designed by Guarino Guarini and notably lacks a traditional bell tower.
The current name derives from the medieval fortress that occupied the site before the construction of the Palazzo Madama.
The equestrian statue in the square honors Emanuele Filiberto of Savoy.
Piazza Castello is the central hub of Turin, serving as the historical nexus where the city's primary royal and political axes intersect. The square is defined by the Palazzo Reale di Torino to the north and the Palazzo Madama in its center, which incorporates a medieval castle foundation behind a Baroque facade. It acts as a pedestrian-friendly gateway connecting the Via Roma shopping district to the historic center. The square is bordered by extensive arcaded porticoes, a characteristic feature of Turin’s urban design. It serves as the primary ceremonial space for the city, hosting major events and public celebrations. It is a UNESCO World Heritage site as part of the Residences of the Royal House of Savoy.
From the center of the square looking toward the Baroque facade of the Palazzo Madama during golden hour.
Explore the adjacent Via Po for its historic cafes and views leading toward the river.
Walk under the arcades if visiting during rain or extreme heat, as they provide covered passage across most of the square's perimeter.
Visit the courtyard of Palazzo Reale for a peaceful architectural experience separate from the main square traffic.
Avoid dining at the tourist-oriented restaurants immediately adjacent to the square, as quality is often higher just two blocks into the side streets.
