Salzburg vs Arch

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Salzburg (Austrian German: [ˈsaltsbʊʁk]; German: [ˈzaltsbʊʁk] (listen); literally "Salt Fortress"; Bavarian: Soizbuag) is the capital city of the State of Salzburg and fourth-largest city in Austria. In 2020, it had a population of 156,872.The town is located on the site of the former Roman settlement of Iuvavum. Salzburg was founded as an episcopal see in 696 and became a seat of the archbishop in 798. Its main sources of income were salt extraction and trade and, at times, gold mining. The fortress of Hohensalzburg, one of the largest medieval fortresses in Europe, dates from the 11th century. In the 17th century, Salzburg became a centre of the Counter-Reformation, where monasteries and numerous Baroque churches were built.

Salzburg's historic centre (German: Altstadt) is thus renowned for its Baroque architecture and is one of the best-preserved city centres north of the Alps, with 27 churches. It was listed as a UNESCO World Heritage Site in 1996. The city has three universities and a large population of students. Tourists also visit Salzburg to tour the historic centre and the scenic Alpine surroundings. Salzburg was the birthplace of the 18th-century composer Wolfgang Amadeus Mozart. Because of its history, culture, and attractions, Salzburg has been labeled Austria's "most inspiring city."

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