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Torre de los Perdigone
"In Seville's San Gil district, next to the Barqueta bridge , the main access to Expo'92, the Torre de Perdigones - Camera Obscura tower was part of the old San Francisco de Paula factory, popularly known as the Perdigones (pellet) factory.
As its name suggests, the factory was one of the many foundries in the city and was dedicated to the manufacture of pellets (which were made in the tower), bullets and zinc sheets for the manufacture of zinc baths, which were famous at the time. Built in 1885, it was owned by Manuel Mata.
Pellets were produced by melting lead in a kiln and then using huge ladles to pour it onto screens of different sizes (according to size of the pellet). The windows that let in the air did the rest, with the pellets falling like rain due to the effects of gravity. It was restored with sponsorship from a famous store around the time of Expo'92. Further restoration work was paid for by the Council in August 2005.
It was opened as a camera obscura in 2007 - one of the few cameras obscuras in the world - giving views over the city from a height of 45 metres, almost half the height of the Giralda."
Retrieved from the Andalucía official tourism website: https://www.andalucia.org