Ivrea vs Arch

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Ivrea (Italian: [iˈvrɛːa]; Piedmontese: Ivrèja [iˈʋrɛja]; French: Ivrée; Latin: Eporedia) is a town and comune of the Metropolitan City of Turin in the Piedmont region of northwestern Italy. Situated on the road leading to the Aosta Valley (part of the medieval Via Francigena), it straddles the Dora Baltea and is regarded as the centre of the Canavese area.

Ivrea lies in a basin that in prehistoric times formed a large lake. Today five smaller lakes — Sirio, San Michele, Pistono, Nero and Campagna — are found in the area around the town. On July 1, 2018, the site which is known as "Industrial City of the 20th Century" was listed as a UNESCO World Heritage site.

Source: Wikipedia

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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.

Source: Wikipedia