cave of the nymphaeum grotta del ninfeo artificial cave on greek roman theater in syracuse siracusa, sicily, italy

amphitheater amphitheatre ancient archaeological archeology architecture artificial blue cave cavern city cloud culture del destination europe exterior famous formation greek grotta heritage hill historic italian italy landmark mediterranean monument neapolis ninfeo nobody nymphaeum old outdoor park rock roman room ruins sicilia sicily sightseeing siracusa sky source steps stone syracuse temenite theater theatre tourism town travel water