"A detailed 3D render of an O'Neill Cylinder 'Island Three' space habitat

"A detailed 3D render of an O'Neill Cylinder 'Island Three' space habitat. Huge cylindrical structure floating in space, approximately 5 miles in diameter and 20 miles long. Metallic grey exterior with a large circular cap at one end. Three long, thin support struts extend from a ring structure at the opposite end. The cylinder has alternating strips of window panels and solid hull along its length. Visible interior through windows shows a curved landscape with green areas and water. Black space background with distant stars. Highly detailed, realistic sci-fi aesthetic, official concept art style."