explore the roman amphitheatre in pula, croatia

pulamphitheatre roman coliseum ancient architecture croatia istria travel history tourism archaeological ruins sightseeing culture outdoor landmark heritage stone structure columns events arena construction historic site visitor openair blue sky view engineering preservation tradition exploration tourismactivity journey landmarkphotography travelguide ancienthistory romanarchitecture archways sunlit scenic culturalexperience beautiful ancientruins iconic travelphotography