vineyards basking in the sunlight, with rows of grapevines stretching across rolling hills

vineyards douro valley portugal endless scenic landscape wine region lush green agriculture nature picturesque river hills terraced countryside rural tranquil serene beautiful breathtaking panoramic grapevines harvest heritage traditional winemaking idyllic view peaceful mediterranean natural beauty cultural viticulture sunlight expansive rolling charm farming vineyard rows travel tourism cultivation grape fields hillside rich soil agritourism rustic country basking stretching