Quito vs Arch

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Quito (; Spanish pronunciation: [ˈkito] (listen); Quechua: Kitu; formally Saint Francis of Quito) is the capital of Ecuador, the country's most populous city and at an elevation of 2,850 metres (9,350 ft) above sea level, it is the second highest official capital city in the world, and the closest to the equator. It is located in the Guayllabamba river basin, on the eastern slopes of Pichincha, an active stratovolcano in the Andes Mountains. In 2008, the city was designated as the headquarters of the Union of South American Nations.The historic centre of Quito is one of the largest, least-altered and best-preserved in the Americas.

Quito and Kraków, Poland, were the first World Cultural Heritage Sites declared by UNESCO, in 1978. The central square of Quito is located about 25 kilometres (16 mi) south of the equator; the city itself extends to within about 1 kilometre (0.62 mi) of zero latitude. A monument and museum marking the general location of the equator is known locally as la mitad del mundo (the middle of the world), to avoid confusion, as the word Ecuador is Spanish for equator.

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