ruin of the small roman amphitheatre in pula,croatia

adriatic amphitheatre ancient antique arch architecture arena augustus balkan blue building buildings center church city coastal coliseum colosseum column construction croatia croatian culture day detail europe facade forum gate hall heritage historic historical history house istra istria istrian landmark made marina mediterranean monument nautical old ornaments outdoor outside pillars port pula religion roman ruin ruins scenery sea sergei sky square stone stonemade stonepaved stony street structure temple theatre tourism town triumphal unesco urban wall window windows yachting