The Science Museum occupies a group of old buildings to which has been added a new construction that is based, in turn, on medieval remains and buildings of the eighteenth and nineteenth centuries. Among the existing buildings stands out a singular late-medieval house attached to the Arab wall. This house has been restored with an indigo blue color that appeared in small samples of the plasters on the walls and that completes the color palette of the neighboring buildings. Among the new, a large dome ten meters in diameter that serves as a large screen where more than 6000 stars, celestial objects and planets are projected. Museum and Planetarium were opened to the public i…