interior view of the courtyard of zappeion hall, a neo-classical building at the center of athens city

architecture athens attractions backyard building center city classic classical colonnade columns courtyard destination europe famous garden greece greek hall heritage historic historical history holidays icon indoors interior landmark mansion marble megaro megaron monument national neo neoclassic neoclassical old peristilio peristyle pillars popular sightseeing square summer syntagma tourism touristic travel urban vacation view visit zappeio zappeion zappio