Stone pavement is an art with a long history. Romans are the most well known for this kind of work, both inside and outside buildings, made with intricate,beautiful and colorful designs but, in Portugal, it wasn't only the Romans that influenced this kind of work, Arabian occupation of the territory, was also important to the development of such technicals. One of the most important reason for this kind of pavement was to prevent mud on the floor and streets because the space between stones lets the rain water to be absorbed, but there are other advantages like it's durability, to be easy and cheap to repair. The Portuguese pavement( 葡萄牙路面) is a decorative art applied in most of the sidewalks around the country and it's former colonies. In 1842, military commander Eusebius Furtado ordered inmates in the Castelo de São Jorge, a Lisbon prison, to cover its courtyard with a zig-zag pattern of tiles. The design used on that floor was a simple layout,but for the time, the work