Piazza Della Libertà, Florence
Piazza della Libertà () is the northernmost point of the historic centre of Florence. It was created in the 19th century during works to produce the Viali di Circonvallazione around the city. It hosts Triumphal Arch of the Lorraine and, in winter, an ice rink for skating. History and architecture A clearing around Porta San Gallo has existed since the fourteenth century and its name has historically been ''Porta San Gallo Square''. In 1738 the square's Triumphal Arch of the Lorraine was erected to celebrate the arrival of the Habsburg-Lorraine dynasty in Florence. In 1865, the demolition of the medieval walls allowed for a new reshaping of the area by the architect Giuseppe Poggi, completed by 1875 in the present elliptical shape square, surrounded by palaces. In the middle of the tree-lined park is a pool with fountains in front of the triumphal arch. The square was named ''Camillo Cavour square'', changed in 1930 to ''Costanzo Ciano square'', in 1944 to ''Muti square'', ...
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Arch In Florence
An arch is a vertical curved structure that spans an elevated space and may or may not support the weight above it, or in case of a horizontal arch like an arch dam, the hydrostatic pressure against it. Arches may be synonymous with vaults, but a vault may be distinguished as a continuous arch forming a roof. Arches appeared as early as the 2nd millennium BC in Mesopotamian brick architecture, and their systematic use started with the ancient Romans, who were the first to apply the technique to a wide range of structures. Basic concepts An arch is a pure compression form. It can span a large area by resolving forces into compressive stresses, and thereby eliminating tensile stresses. This is sometimes denominated "arch action". As the forces in the arch are transferred to its base, the arch pushes outward at its base, denominated "thrust". As the rise, i. e. height, of the arch decreases the outward thrust increases. In order to preserve arch action and prevent collapse ...
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