Dubrovnik Old city, the Pearl of the Adriatic , has preserved its beautiful Gothic, Renaissance and Baroque churches, monasteries, palaces and fountains, as well as the city walls that encircle the Old city, giving its characteristic appearance. This precious cultural heritage, inscribed on the UNESCO World Heritage List from 1979, is the subject of the complex light design project. It implements the newest lighting technology in order to achieve the best lighting effects, as well as energy efficient solutions by which the energy consumption is reduced by 40% (comparing to the old one). The 1st phase of the project (lighting of the city walls) was finalized in 2009, followed by 2nd phase: architectural and public lighting inside the Old City.