The Galleria Vittorio Emanuele II () is Italy's oldest active shopping gallery and a major landmark of Milan in Italy. Housed within a four-story double arcade in the centre of town, the Galleria is named after Victor Emmanuel II, the first king of the Kingdom of Italy. It was designed in 1861 and built by architect Giuseppe Mengoni between 1865 and 1877. Architecture The structure consists of two glass-vaulted arcades intersecting in an octagon covering the street connecting Piazza del Duomo to Piazza della Scala. The street is covered by an arching glass and cast iron roof, a popular design for 19th-century arcades, such as the Burlington Arcade in London, which was the prototype for larger glazed shopping arcades, beginning with the Saint-Hubert Gallery in Brussels (opened in 1847), the Passazh in St Petersburg (opened in 1848), the Galleria Umberto I in Naples (opened in 1890), and the Budapest Galleria. The central octagonal space is topped with a glass dome. The Milanese Galleria was larger in scale than its predecessors and was an important step in the evolution of the modern glazed and enclosed shopping mall, of which it was the direct progenitor. It has inspired the use of the term galleria for many other shopping arcades and malls. On the ground of the central octagonal, there are four mosaics portraying the coat of arms of the three capitals of the Kingdom of Italy (Turin, Florence and Rome) plus Milan's. Tradition says that if a person spins around three times with a heel on the testicles of the bull from Turin coat of arms this will bring good luck. This practice causes damage to the mosaic: a hole developed on the place of the bull's genitals. The Galleria connects two of Milan's most famous landmarks: The Duomo and the Teatro Alla Scala, but the Galleria is a landmark in its own right. The iron-and-glass roof The Milan gallery and its roof have been acknowledged as an important reference on 19th-century iron-and-glass architecture by Pevsner and Hitchcock. As one can still observe today, the roof consists of four barrel vaults (approximately 14.5 m in width and 8.5 m in height) that are crowned with a huge dome (around 37.5 m as internal diameter and 17.10 m in height). Jorini pointed out the accomplishments of this dome with special regard to the large dimensions. Each of the roof parts is topped with