aerial shot over water of the Douro river under a blue dusk with mountains in background, in Baião, Portugal

aerial shot water douro river blue dusk baiao portugal scenic landscape nature beauty tranquility riverbank reflection serenity peaceful countryside view drone capture sunlight evening horizon picturesque natural waterway flowing tranquil serenade sunset twilight colors calm idyllic aerial view stunning breathtaking panoramic majestic exploration adventure travel destination tourism river douro wild mountains