Ключевые слова: amphitheater, ancient, aperture, arc, arch, architecture, arena, brick, building exterior, circa 1st century, coliseum, construction industry, corridor, curve, design element, discovery, ellipse, engineering, europe, facade, heritage, high section, high up, history, in a row, indoors, invention, istria, material, monument, old, past, pula, roman, scale, shape, sky, stone, surrounding wall, tourist, travel destinations, unesco, vespasian, wall, window,