View of Mount Vesuvius & Gulf of Naples, Italy. The Certosa di San Martino is a former monastery complex, now a museum. Along with Castel Sant'Elmo that stands beside it, this is the most visible landmark of the city, perched atop the Vomero hill that commands the gulf. [http://en.wikipedia.org/wiki/Certosa_di_San_Martino]
Castel Nuovo ("New Castle"), aka Maschio Angioino,... Piazza Municipio, Naples, Italy .... http://www.castlesandmanorhouses.com/ Castel Nuovo's scenic location and imposing size makes the castle, first erected in 1279, one of the main architectural landmarks of the city.