park colle oppio ono the oppian hill with blooming purple bougainvillea tree and domus aurea in the distance in rome, italy

oppian hill flowers purple park colle oppio bougainvillea plant outside bunch flora bright decoration floral beautiful blossom blooming outdoors natural summer alley trees palm tropical outdoor idyllic nature exterior cityscape view architecture european architectural walk tourism domus aurea monument italy rome green old tree italian ancient garden travel landscape resting