A 45-degree isometric top view of a massive Cylinder-shaped world designed with an epic breathtaking scale. The top surface features towering snow-capped mountains sprawling futuristic cities ancient castles dense enchanted forests and vast oceans with waterfalls cascading over the cube’s edges. The bottom reveals intricate layers of rock glowing magma rivers underground civilizations and deep mysterious caves. The scene is incredibly detailed with a grand fantasy and sci-fi aesthetic dramatic lighting and a sense of vastness and adventure.