Sergels torg from Mäster Samuelsgatan

Sergels torg (Sergel's Square) is a major public square in the Norrmalm district of central Stockholm, Sweden. Conceived during the 1950s as part of a sweeping urban renewal programme that transformed the old Norrmalm district, the square was officially inaugurated in 1967 and takes its name from the 18th-century Swedish sculptor Johan Tobias Sergel, whose workshop was once situated nearby. The square operates across two levels: an upper traffic roundabout dominated by a superellipse-shaped carriageway, and a sunken pedestrian plaza known colloquially as Plattan ("The Slab"), noted for its bold geometric black-and-white tiled floor. The square's most iconic feature is Kristall — vertikal accent i glas och stål, a 37-metre-tall illuminated glass obelisk designed by sculptor Edvin Öhrström, completed in 1974. The southern edge of the square is bordered by Kulturhuset, a modernist cultural centre designed by architect Peter Celsing, which houses the Stockholm City Theatre. Sergels torg serves as a principal venue for public demonstrations, cultural festivals, and civic celebrations.