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Paving as a craft is believed to have originated in Mesopotamia, where rocky materials were used in the inside and outside of constructions, being later brought to Ancient Greece and Ancient Rome.
The Romans used to pave the vias connecting the empire using materials to be found in the surroundings. Some of the techniques introduced then are still applied on the calçada, most noticeably the use of a foundation and a surfacing.
Is a distinctive form of Art with a unique Portuguese printing on it as well a particular style of pavement that desired to many sidewalks around the world!