the national observatory of athens city, greece on top of the nymphs` hill in thission district. view from plaka district under th

acropolis architecture athens attica attractions building city cityscape culture day destination dome europe famous filopappou greece greek heritage hill historic historical history holidays icon landmark landscape mediterranean national nature neoclassical nymphs observatory old outdoors picturesque plaka scenery sightseeing summer thiseio thisseion thissio tourism touristic traditional travel urban vacation view visit