italy, sicily, catania, piazza federico di svevia, castello ursino

italy sicily catania piazza federico svevia castello ursino building castle fortification ruins monastery wall tower landmark abbey waterway estate property tourism ancient architecture army bastille bastion brick bulwark buttress camp citadel city corner culture defense europe exterior famous fort fortress france gate gothic heritage history house landscape medieval military monument norman old outdoor resistance rock sky stone stronghold summer view war ancient architecture army bastille bastion brick building bulwark buttress camp castello castle catania citadel city corner culture defense europe exterior famous fort fortress france gate gothic heritage history house italy landmark landscape medieval military monument norman old outdoor resistance rock sicily sky stone stronghold summer tourism tower view wall