Calamosca is one of the town beach of Cagliari , located about 4 km away from the city center . The beach is located in the middle of a small cove bordered by a cliff in the west and from Sant'Elia hill east . Nearby stands the eponymous tower of Calamosca , built by the Spanish in the seventeenth century as part of the anti - Barbaresco defensive system of the Gulf of Cagliari. CalaMosca is an the best place of Cagliari. Is easily reachable, even with the 5 end 11 of CTM ( the bus that gos in every way of the our City). In the summer ,is an fantastic for the il relax, read an book or plays with your child. Is exting do bath, underwater fishing or diving. Cala Mosca is very beatiful even in winter. Infact, much people admire our beach always. When there is the wind is perfect for surfing. The fine white sand is the ' sea water is crystal clear , with the colors from emerald green and the ' blue. The beach is shallow sandy. In the western part it is located on a cliff with a tower : " Devil's Saddle. " The name comes from a legend : Lucifer was impressed by the beauty of the Gulf of Cagliari and tried to seize it , so God sent his angels to hunt Lucifero.Durante the battle Lucifer fell on the promontory giving it its current form.