Acrocorinth historic castle on top of the mountain at sunset with Euphorbia characias (Mediterranean spurge) yellow flowers, Greece

acrocorinth castle sunset mountain euphorbia characias yellow flowers greece historic nature landscape spring architecture tourism travel scenic outdoor flora heritage culture sky rock formation hillside mediterranean exploration greenery ancient ruins natural beauty agriculture tranquility photosynthesis wildflowers site landmark bright colors evening light visual arts serenity picturesque geology hiking preservation environment