Atalanta Bergamasca Calcio, commonly referred to as Atalanta, is a professional football club based in Bergamo, Lombardy, Italy. The club plays in Serie A, having gained promotion from Serie B in 2010–11. The club is nicknamed La Dea, the Nerazzurri and the Orobici. Founded in 1907 by Swiss students in the gym of the liceo classico, Atalanta play in blue-and-black vertically striped shirts, black shorts and black socks. The club stadium is the 21,300 seat Gewiss Stadium. In Italy, Atalanta is sometimes called Regina delle provinciali to mark the fact that the club is by far the most consistent among Italian clubs not based in a regional capital, having played 58 seasons in Serie A, 28 seasons in Serie B and only one in Serie C. The club won the Coppa Italia in 1963 and reached the Cup Winners' Cup semi-final in 1988, when it was still competing in Serie B. This is still the best ever performance by a non-first division club in a major UEFA competition. Atalanta also participated in four seasons of the UEFA Europa League, reaching the quarter-finals in the 1990–91 season.